Topic summary99 (number) Expand Summary Related topics ←90919293949596979899→List of numbersIntegers←0102030405060708090→Cardinalninety-nineOrdinal99th(ninety-ninth)Factorization3 × 11Divisors1, 3, 9, 11, 33, 99Greek numeralϞΘ´Roman numeralXCIX, xcixBinary11000112Ternary102003Senary2436Octal1438Duodecimal8312Hexadecimal6316Chinese/Japanese/Korean numeral九十九Korean numeral (Hangul)구십구99 (ninety-nine) is the natural number following 98 and preceding 100. Wikipedia source