9969

9969 is a natural number that comes after 9968 and before 9970.

Mathematically, 9969 is an odd composite number. Its prime factorization is 3 × 3323, with 3323 prime, so 9969 is a semiprime (the product of two primes).

The digit sum is 9 + 9 + 6 + 9 = 33, which makes 9969 divisible by 3 but not by 9. It is congruent to 0 modulo 3 and 1 modulo 8. In binary, 9969 is 10011011110001, and in hexadecimal it is 0x26F1.

There is no widely recognized mathematical constant, theorem, or notable historical event associated specifically with the number 9969; it is primarily encountered as a numerical label in arithmetic and numeral representation.