99491588 has 12 divisors (see below), whose sum is σ = 198983232. Its totient is φ = 42639240.

The previous prime is 99491521. The next prime is 99491591. The reversal of 99491588 is 88519499.

99491588 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1776608 + ... + 1776663.

It is an arithmetic number, because the mean of its divisors is an integer number (16581936).

Almost surely, 2^99491588 is an apocalyptic number.

It is an amenable number.

99491588 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

99491588 is a wasteful number, since it uses less digits than its factorization.

99491588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3553282 (or 3553280 counting only the distinct ones).

The product of its digits is 933120, while the sum is 53.

The square root of 99491588 is about 9974.5470072580. The cubic root of 99491588 is about 463.3709333506.

The spelling of 99491588 in words is "ninety-nine million, four hundred ninety-one thousand, five hundred eighty-eight".