89731173 has 16 divisors (see below), whose sum is σ = 139314816. Its totient is φ = 50306880.

The previous prime is 89731139. The next prime is 89731193. The reversal of 89731173 is 37113798.

It is a happy number.

It is not a de Polignac number, because 89731173 - 2¹³ = 89722981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89731193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39198 + ... + 41423.

It is an arithmetic number, because the mean of its divisors is an integer number (8707176).

Almost surely, 2^89731173 is an apocalyptic number.

It is an amenable number.

89731173 is a deficient number, since it is larger than the sum of its proper divisors (49583643).

89731173 is a wasteful number, since it uses less digits than its factorization.

89731173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80684.

The product of its digits is 31752, while the sum is 39.

The square root of 89731173 is about 9472.6539575770. The cubic root of 89731173 is about 447.6938361087.

The spelling of 89731173 in words is "eighty-nine million, seven hundred thirty-one thousand, one hundred seventy-three".