90 (ninety) is the natural number preceded by 89 and followed by 91. In Mathematics, a natural number (also called counting number) can mean either an element of the set (the positive Integers or an 89 ( eighty-nine) is the Natural number following 88 and preceding 90. 91 ( ninety-one) is the Natural number following 90 and preceding 92.

← 90 91 92 93 94 95 96 97 98 99 → List of numbers — Integers 0 10 20 30 40 50 60 70 80 90 →
Cardinal	90 ninety
Ordinal	90th ninetieth
Factorization
Divisors	1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90
Roman numeral	XC
Roman numeral (Unicode)	XC, xc
Binary	1011010
Octal	132
Duodecimal	76
Hexadecimal	5A
Hebrew	צ (Tsadi)

In mathematics

90 is the sum of the squares of the integers 2 to 6. 89 ( eighty-nine) is the Natural number following 88 and preceding 90. 91 ( ninety-one) is the Natural number following 90 and preceding 92. 92 ( ninety-two) is the Natural number following 91 and preceding 93. 93 ( ninety-three) is the Natural number following 92 and preceding 94. 94 ( ninety-four) is the Natural number following 93 and preceding 95. 95 ( ninety-five) is the Natural number following 94 and preceding 96. For the Australian TV series see Number 96 (TV series 96 ( ninety-six) is the Natural number following 95 and preceding 97 97 ( ninety-seven) is the Natural number following 96 and preceding 98. 98 ( ninety-eight) is the Natural number following 97 and preceding 99. 99 ( ninety-nine) is the Natural number following 98 and preceding 100. This is a list of articles about Numbers ( not about Numerals. The integers (from the Latin integer, literally "untouched" hence "whole" the word entire comes from the same origin but via French "Twenty" redirects here For the village in England, see Twenty Lincolnshire. 30 ( thirty) is the Natural number following 29 and preceding 31. 40 ( forty) is the Natural number following 39 and preceding 41. This article discusses the number fifty. For the year 50 CE see 50. 60 ( sixty) is the Natural number following 59 and preceding 61. 70 ( seventy) is the Natural number following 69 and preceding 71. 80 ( eighty) is the Natural number following 79 and preceding 81. This article describes cardinal numbers in mathematics For cardinals in linguistics see Names of numbers in English. In Set theory, an ordinal number, or just ordinal, is the Order type of a Well-ordered set. In Mathematics, factorization ( also factorisation in British English) or factoring is the decomposition of an object (for In Mathematics, a divisor of an Integer n, also called a factor of n, is an integer which evenly divides n without Roman numerals are a Numeral system originating in ancient Rome, adapted from Etruscan numerals. The binary numeral system, or base-2 number system, is a Numeral system that represents numeric values using two symbols usually 0 and 1. The octal Numeral system, or oct for short is the base -8 number system and uses the digits 0 to 7 The duodecimal system (also known as base -12 or dozenal) is a Numeral system using twelve as its base. In Mathematics and Computer science, hexadecimal (also base -, hexa, or hex) is a Numeral system with a The integers (from the Latin integer, literally "untouched" hence "whole" the word entire comes from the same origin but via French Because 90 is the sum of its unitary divisors (excluding itself), it is a unitary perfect number, and because it is equal to the sum of a subset of its divisors, it is a semiperfect number. In Mathematics, a Natural number a is a unitary divisor of a number b if a and \frac{b}{a} are Coprime A unitary perfect number is an Integer which is the sum of its positive proper Unitary divisors not including the number itself In Mathematics, a semiperfect number or pseudoperfect number is a Natural number n that is equal to the sum of all or some of its Proper 90 is a pronic number. A pronic number, oblong number or heteromecic number, is a number which is the product of two consecutive integers that is n  ( n  + 1 But it is also a nontotient. In Number theory, a nontotient is a positive integer n which is not in the range of Euler's totient function φ that is for which φ( It is a Perrin number, preceded in the sequence by 39, 51, 68. In Mathematics, the Perrin numbers are defined by the Recurrence relation P (0 = 3 P (1 = 0 P (2 = 2

In normal space, the interior angles of a square measure 90 degrees each. Also, in a right triangle, the angle opposing the hypotenuse measures 90 degrees, with the other two angles adding up to 90 for a total of 180 degrees. 180 ( one hundred eighty in American English, one hundred and eighty in British English) is the natural number following 179 and preceding Thus, an angle measuring 90 degrees is called a right angle. ^[2]

90 is divisible by the sum of its base 10 digits, thus it is a Harshad number. A Harshad number, or Niven number, is an Integer that is divisible by the sum of its digits in a given number base.

In astronomy

• Messier object M90, a magnitude 11. The Messier objects are a set of Astronomical objects first listed by French astronomer Charles Messier in his "Catalogue des Nébuleuses Messier 90 (also known as M90 and NGC 4569) is a Spiral galaxy about 60 million Light-years away in the Constellation Virgo The apparent magnitude ( m) of a celestial body is a measure of its Brightness as seen by an observer on Earth, normalized to the value 0 spiral galaxy in the constellation Virgo
• The New General Catalogue object NGC 90, a barred spiral galaxy in the constellation Andromeda
• The Saros number of the solar eclipse series which began on 134 BC September 28 and ended on 1345 March 4. A spiral galaxy is a Galaxy belonging to one of the three main classes of galaxy originally described by Edwin Hubble in his 1936 work “The Realm of the In common usage a constellation is a group of celestial bodies that are connected together in some arrangement typically stars to form a visible figure or picture Virgo ( Virgin, symbol, Unicode ♍ is a Constellation of the Zodiac. The New General Catalogue ( NGC) is the best-known catalogue of Deep sky objects in Amateur astronomy. A barred spiral galaxy is a Spiral galaxy with a central bar-shaped structure composed of Stars Bars are found in approximately half of all spiral galaxies Andromeda ( is a Constellation named for the princess Andromeda ( Greek Ανδρομέδη = guardian of the men) a character in Saros or Sáros may refer to Saros cycle, a method for predicting solar eclipses SS Saros, a shipwreck off the southeast coast A solar eclipse occurs when the Moon passes between the Sun and the Earth so that the Sun is wholly or partially obscured Events 48 BC - Pompey the Great is assassinated on orders of King Ptolemy of Egypt after landing in Egypt. Events 51 - Nero, later to become Roman Emperor, is given the title Princeps iuventutis (head of the youth The duration of Saros series 90 was 1478. 4 years, and it contained 83 solar eclipses.
• The Saros number of the lunar eclipse series which began on 150 June 27 and ended on 1430 August 4. A lunar eclipse occurs whenever the Moon passes through some portion of the Earth's shadow Events 1358 - Republic of Dubrovnik is founded 1709 - Peter the Great defeats Charles XII of Sweden Events 70 - The Destruction of the Second Temple in Jerusalem by the Romans. The duration of Saros series 90 was 1280. 1 years, and it contained 72 lunar eclipses.

In other fields

Interstate 90

Ninety is:

• The year AD 90, 90 BC, or 1990. Interstate 90 (I-90 is the longest interstate highway in the United States at nearly 3100 miles (5000 kilometers Year 90 was a Common year starting on Friday (link will display the full calendar of the Julian calendar. Year 90 BC was a year of the pre-Julian calendar. Events By place Rome Consuls Lucius Julius Caesar and Year 1990 ( MCMXC) was a Common year starting on Monday (link displays the 1990 Gregorian calendar)
• The 1890’s were known as the Gay Nineties
• Abbott and Costello "The Naughty Nineties" film (1945)
• The atomic number of thorium, an actinide. Gay Nineties is an American term that refers to the decade of the 1890s William (Bud Abbott and Lou Costello (born Louis Francis Cristillo performed together as Abbott and Costello, an American comedy duo whose The Naughty Nineties is a 1945 film starring the comedy team of Abbott and Costello. Year 1945 ( MCMXLV) was a Common year starting on Monday (link will display the full calendar Thorium (ˈθɔːriəm is a Chemical element with the symbol Th and Atomic number 90 History of the actinoid series From the earlier known chemical properties of actinium (89 up to uranium (92 indicating a relation to the Transition metals it was generally
• The atomic weight of an isotope of strontium, a by-product of nuclear reactions including fallout. Isotopes (Greek isos = "equal" tópos = "site place" are any of the different types of atoms ( Nuclides Strontium (ˈstrɒntiəm /ˈstrɒnʃiəm/) is a Chemical element with the symbol Sr and the Atomic number 38 It contaminates milk. Milk is an opaque white liquid produced by the Mammary glands of female Mammals (including Monotremes.
• The latitude of the North Pole and the South Pole. The North Pole, also known as the Geographic North Pole or Terrestrial North Pole, is subject to the caveats explained below defined as the point in the northern The South Pole, also known as the Geographic South Pole or Terrestrial South Pole, is the southernmost point on the surface of the Earth.
• The designation of United States Interstate 90, a freeway that runs from Washington to Massachusetts. The United States of America —commonly referred to as the Interstate 90 (I-90 is the longest interstate highway in the United States at nearly 3100 miles (5000 kilometers Washington ( is a state in the Pacific Northwest region of the United States. The Commonwealth of Massachusetts ( is a state located in the New England region of the northeastern United States.
• The code for international direct dial phone calls to Turkey. Turkey (Türkiye known officially as the Republic of Turkey ( is a Eurasian Country that stretches
• The ISBN Group Identifier for books published in the Netherlands. The Netherlands ( Dutch:, ˈnedərlɑnt is the European part of the Kingdom of the Netherlands, which consists of the Netherlands the Netherlands
• The Russian T-90 tank is the most modern in their arsenal. Russia (Россия Rossiya) or the Russian Federation ( Rossiyskaya Federatsiya) is a transcontinental Country extending The GPO Uralvagonzavod T-90 is a Russian main battle tank derived from the T-72, and is currently the most modern tank in the Russian
• The number of minutes in a football (soccer) match. Association football, more commonly known as football or soccer, is a Team sport played between two teams of eleven players and is widely considered
• In the song "My Grandfather's Clock" by Henry Clay Work, the number of years the clock stood on the floor. "My Grandfather's Clock" is a Song written in 1876 by Henry Clay Work, the author of " Marching Through Georgia " Henry Clay Work ( October 1, 1832 - June 8, 1884) was an American Composer and Songwriter.
• The number of Psalms credited to Moses; the ninety-first psalm is also likely his work. Psalms ( Hebrew: Tehilim, תהילים, or "praises" is a book of the Hebrew Bible (the Christian Old Testament) included Moses ( Latin: Moyses,; Greek: grc Mωυσής in both the Septuagint and the New Testament; Arabic: ar موسىٰ
• 90 minute cassette tapes
• "90 Miles An Hour (Down A Dead End Street)" by Hank Snow
• Mission 90 Days film (2007)
• "Bob Hope: The First 90 Years" TV special aired on NBC on May 14, 1993)
• Joe 90, a 1968 U. The Compact Cassette, often referred to as audio cassette, cassette tape, cassette, or simply tape, is a Magnetic tape sound Clarence Eugene Snow ( May 9, 1914 &ndash December 20, 1999) better known as Hank Snow, was a Hall of Fame Country music Mammootty plays Major Sivaraman a National Security Guard (NSG officer in Major Ravi's ‘Mission 90 Days' Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Bob Hope, KBE KCSG ( May 29, 1903 &ndash July 27, 2003) was an American comedian and actor who appeared in Events 1264 - Battle of Lewes: Henry III of England is captured in France making Simon de Montfort the Year 1993 ( MCMXCIII) was a Common year starting on Friday (link will display full 1993 Gregorian calendar) Joe 90 is a 1968 television series concerning the adventures of a nine-year-old boy Joe McClaine set in the years 2012 - 13. Year 1968 ( MCMLXVIII) was a Leap year starting on Monday (link will display full calendar of the Gregorian calendar. K. TV series, set in 2012
• Playhouse 90, a 90-minute long dramatic CBS TV series from 1956-61
• Cuba is 90 miles off the Florida coast
• Gloria Estefan "90 Millas" CD (90 miles)
• Nokia E90 Communicator
• 90 Minutes in Heaven: A True Story of Death and Life by Don Piper

In sports

• Nike Total 90 Apparel is a brand name of apparel and sports equipment from equipment bags to goalkeeper gloves

• Major League baseball bases are 90 feet away in distance
• The car number most associated by former NASCAR team owner Junie Donlavey
• It also is the length (in minuites) of a soccer game. 2012 ( MMXII) will be a Leap year starting on Sunday of the Gregorian calendar. Playhouse 90, a 90-minute dramatic television anthology series was telecast on CBS from 1956 to 1961 for a total of 133 episodes Year 1956 ( MCMLVI) was a Leap year starting on Sunday (link will display full calendar of the Gregorian calendar. Year 1961 ( MCMLXI) was a Common year starting on Sunday (link will display full calendar of the Gregorian calendar. The Republic of Cuba (ˈkjuːbə or) consists of the island of Cuba (the largest and second-most populous island of the Greater Antilles) Isla de la Florida ( is a state located in the southeastern region of the United States, bordering Alabama to the northwest and Georgia to the Gloria Estefan (born Gloria María Fajardo on September 1, 1957) is a Cuban American singer and songwriter 90 Millas ( 90 Miles) released in September 2007 is the eleventh studio solo album and fourth Spanish album released by Cuban- American singer Nokia E90 Communicator is a 3G Smartphone made by Nokia and the latest model of the Communicator series Don Piper (born 1950 is a Baptist minister who wrote 90 Minutes in Heaven, a book describing his Near-death experience. Don Piper (born 1950 is a Baptist minister who wrote 90 Minutes in Heaven, a book describing his Near-death experience. Nike Total 90 is a Brand of Nike sportswear and equipment first introduced in 2000 and specifically designed to be used for Association football. The National Association for Stock Car Auto Racing ( NASCAR) is the largest sanctioning body of Stock cars in the United States. WC "Junie" Donlavey (born April 8, 1924 in Richmond Virginia) is a former NASCAR Sprint Cup Series car owner with a

References

1. ^ Various fanboys and fansites use this nickname. Fanboy is a term used to describe any individual who is devoted to a single subject in an emotional or fanatical manner or to a single point of view within that subject often to A fansite or fan site (also named fanpage is a Website created and maintained by a fan (s or devotee(s interested in a Celebrity, thing or A nickname is a Name of an entity or thing that is not its Proper name. See for example Ninty.net and the South African Nintendo Community.
2. ^ Friedman, Erich. What's Special About This Number?