99163872 has 48 divisors (see below), whose sum is σ = 289230480. Its totient is φ = 33054336.

The previous prime is 99163859. The next prime is 99163877. The reversal of 99163872 is 27836199.

99163872 is a `hidden beast` number, since 9 + 9 + 1 + 638 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99163877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56523 + ... + 58250.

It is an arithmetic number, because the mean of its divisors is an integer number (6025635).

Almost surely, 2^99163872 is an apocalyptic number.

It is an amenable number.

99163872 is an abundant number, since it is smaller than the sum of its proper divisors (190066608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99163872 is a wasteful number, since it uses less digits than its factorization.

99163872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114792 (or 114778 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 99163872 is about 9958.1058439846. The cubic root of 99163872 is about 462.8616068549.

The spelling of 99163872 in words is "ninety-nine million, one hundred sixty-three thousand, eight hundred seventy-two".