99170972 has 6 divisors (see below), whose sum is σ = 173549208. Its totient is φ = 49585484.

The previous prime is 99170941. The next prime is 99171019. The reversal of 99170972 is 27907199.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12396368 + ... + 12396375.

It is an arithmetic number, because the mean of its divisors is an integer number (28924868).

Almost surely, 2^99170972 is an apocalyptic number.

It is an amenable number.

99170972 is a deficient number, since it is larger than the sum of its proper divisors (74378236).

99170972 is a wasteful number, since it uses less digits than its factorization.

99170972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24792747 (or 24792745 counting only the distinct ones).

The product of its (nonzero) digits is 71442, while the sum is 44.

The square root of 99170972 is about 9958.4623311031. The cubic root of 99170972 is about 462.8726533476.

The spelling of 99170972 in words is "ninety-nine million, one hundred seventy thousand, nine hundred seventy-two".