99791312 has 10 divisors (see below), whose sum is σ = 193345698. Its totient is φ = 49895648.

The previous prime is 99791311. The next prime is 99791323. The reversal of 99791312 is 21319799.

It can be written as a sum of positive squares in only one way, i.e., 97930816 + 1860496 = 9896^2 + 1364^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 99791312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99791311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3118463 + ... + 3118494.

Almost surely, 2^99791312 is an apocalyptic number.

It is an amenable number.

99791312 is a deficient number, since it is larger than the sum of its proper divisors (93554386).

99791312 is a wasteful number, since it uses less digits than its factorization.

99791312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6236965 (or 6236959 counting only the distinct ones).

The product of its digits is 30618, while the sum is 41.

The square root of 99791312 is about 9989.5601504771. The cubic root of 99791312 is about 463.8357771988.

The spelling of 99791312 in words is "ninety-nine million, seven hundred ninety-one thousand, three hundred twelve".