The number 99

Representation numerals

Greek numeral

ϟθʹ

Arabic numeral

٩٩

Roman numeral

XCIX

Maya numeral

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Chinese numeral

九十九

Hebrew numeral

צט
Numeral systems
Binary: 1100011
Septimal (base 7): 201
Octal: 143
Hexadecimal: 63
Base 24: 43
Factorization
99 = 3 × 3 × 11
99 has 6 divisors: 1, 3, 9, 11, 33, 99
Sum of all divisors other than 99: 57
Sums & differences
Difference of 2 squares: 99 = 182 - 152 = 502 - 492
Characteristics
99 is a palindromic number in decimal system
99 is a palindromic number in binary system (1100011)
Related primes
The 99th prime number is: 523
Previous prime number: 97 — Next prime number: 101
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