99323091 has 24 divisors (see below), whose sum is σ = 170037504. Its totient is φ = 56755080.

The previous prime is 99323087. The next prime is 99323093. The reversal of 99323091 is 19032399.

It is not a de Polignac number, because 99323091 - 2² = 99323087 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (99323093) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27495 + ... + 30896.

It is an arithmetic number, because the mean of its divisors is an integer number (7084896).

Almost surely, 2^99323091 is an apocalyptic number.

99323091 is a deficient number, since it is larger than the sum of its proper divisors (70714413).

99323091 is an equidigital number, since it uses as much as digits as its factorization.

99323091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58413 (or 58401 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 99323091 is about 9966.0970795994. The cubic root of 99323091 is about 463.1092002346.

The spelling of 99323091 in words is "ninety-nine million, three hundred twenty-three thousand, ninety-one".