89939136 has 56 divisors (see below), whose sum is σ = 271962880. Its totient is φ = 25696512.

The previous prime is 89939123. The next prime is 89939137. The reversal of 89939136 is 63193998.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (89939137) 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, 32116 + ... + 34803.

It is an arithmetic number, because the mean of its divisors is an integer number (4856480).

Almost surely, 2^89939136 is an apocalyptic number.

It is an amenable number.

89939136 is an abundant number, since it is smaller than the sum of its proper divisors (182023744).

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

89939136 is a wasteful number, since it uses less digits than its factorization.

89939136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66941 (or 66931 counting only the distinct ones).

The product of its digits is 314928, while the sum is 48.

The square root of 89939136 is about 9483.6246235287. The cubic root of 89939136 is about 448.0394310532.

The spelling of 89939136 in words is "eighty-nine million, nine hundred thirty-nine thousand, one hundred thirty-six".