89857131 has 36 divisors (see below), whose sum is σ = 150957432. Its totient is φ = 47384064.

The previous prime is 89857129. The next prime is 89857139. The reversal of 89857131 is 13175898.

It is not a de Polignac number, because 89857131 - 2¹ = 89857129 is a prime.

It is a super-2 number, since 2×89857131² = 16148607983102322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (89857139) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 23035 + ... + 26651.

It is an arithmetic number, because the mean of its divisors is an integer number (4193262).

Almost surely, 2^89857131 is an apocalyptic number.

89857131 is a deficient number, since it is larger than the sum of its proper divisors (61100301).

89857131 is a wasteful number, since it uses less digits than its factorization.

89857131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3660 (or 3640 counting only the distinct ones).

The product of its digits is 60480, while the sum is 42.

The square root of 89857131 is about 9479.3001323937. The cubic root of 89857131 is about 447.9032180259.

The spelling of 89857131 in words is "eighty-nine million, eight hundred fifty-seven thousand, one hundred thirty-one".