99172930 has 32 divisors (see below), whose sum is σ = 181232640. Its totient is φ = 39070080.

The previous prime is 99172919. The next prime is 99172933. The reversal of 99172930 is 3927199.

It is not an unprimeable number, because it can be changed into a prime (99172933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261481 + ... + 261859.

It is an arithmetic number, because the mean of its divisors is an integer number (5663520).

Almost surely, 2^99172930 is an apocalyptic number.

99172930 is a deficient number, since it is larger than the sum of its proper divisors (82059710).

99172930 is a wasteful number, since it uses less digits than its factorization.

99172930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 99172930 is about 9958.5606389679. The cubic root of 99172930 is about 462.8756995975.

The spelling of 99172930 in words is "ninety-nine million, one hundred seventy-two thousand, nine hundred thirty".