99979299 has 16 divisors (see below), whose sum is σ = 169277440. Its totient is φ = 57130920.

The previous prime is 99979249. The next prime is 99979303. The reversal of 99979299 is 99297999.

It is not a de Polignac number, because 99979299 - 2⁸ = 99979043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99979219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264307 + ... + 264684.

It is an arithmetic number, because the mean of its divisors is an integer number (10579840).

Almost surely, 2^99979299 is an apocalyptic number.

99979299 is a deficient number, since it is larger than the sum of its proper divisors (69298141).

99979299 is a wasteful number, since it uses less digits than its factorization.

99979299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529007 (or 529001 counting only the distinct ones).

The product of its digits is 7440174, while the sum is 63.

The square root of 99979299 is about 9998.9648964280. The cubic root of 99979299 is about 464.1268526408.

The spelling of 99979299 in words is "ninety-nine million, nine hundred seventy-nine thousand, two hundred ninety-nine".