99 (number)

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<< 90 91 92 93 94 95 96 97 98 99 >>

Cardinal 99
ninety-nine
Ordinal 99th
ninety-ninth
Factorization 3^2 \cdot 11
Divisors 1, 3, 9, 11, 33, 99
Roman numeral XCIX
Binary 1100011
Hexadecimal 63

99 (ninety-nine) is the natural number following 98 and preceding 100.

[edit] In mathematics

Ninety-nine is the ninth repdigit, a palindromic number and a Kaprekar number.

It is the sum of the sums of divisors of the first eleven integers.

[edit] In astronomy

Messier object M99, a magnitude 10.5 spiral galaxy in the constellation Coma Berenices.

The New General Catalogue object NGC 99, a magnitude 13.7 spiral galaxy in the constellation Pisces.

[edit] In other fields

German Autobahn 99
Enlarge
German Autobahn 99

Ninety-nine is also: