89708931 has 32 divisors (see below), whose sum is σ = 144291840. Its totient is φ = 54756000.

The previous prime is 89708929. The next prime is 89708933. The reversal of 89708931 is 13980798.

It is an interprime number because it is at equal distance from previous prime (89708929) and next prime (89708933).

It is not a de Polignac number, because 89708931 - 2¹ = 89708929 is a prime.

It is a super-2 number, since 2×89708931² = 16095384602325522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (89708933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45006 + ... + 46956.

It is an arithmetic number, because the mean of its divisors is an integer number (4509120).

Almost surely, 2^89708931 is an apocalyptic number.

89708931 is a deficient number, since it is larger than the sum of its proper divisors (54582909).

89708931 is a wasteful number, since it uses less digits than its factorization.

89708931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104 (or 2098 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 89708931 is about 9471.4798738106. The cubic root of 89708931 is about 447.6568425392.

The spelling of 89708931 in words is "eighty-nine million, seven hundred eight thousand, nine hundred thirty-one".