99931672 has 16 divisors (see below), whose sum is σ = 192436560. Its totient is φ = 48615264.

The previous prime is 99931669. The next prime is 99931679. The reversal of 99931672 is 27613999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99931679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168508 + ... + 169099.

It is an arithmetic number, because the mean of its divisors is an integer number (12027285).

Almost surely, 2^99931672 is an apocalyptic number.

It is an amenable number.

99931672 is a deficient number, since it is larger than the sum of its proper divisors (92504888).

99931672 is a wasteful number, since it uses less digits than its factorization.

99931672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337650 (or 337646 counting only the distinct ones).

The product of its digits is 183708, while the sum is 46.

The square root of 99931672 is about 9996.5830162111. The cubic root of 99931672 is about 464.0531424468.

The spelling of 99931672 in words is "ninety-nine million, nine hundred thirty-one thousand, six hundred seventy-two".