89437931 has 4 divisors (see below), whose sum is σ = 97568664. Its totient is φ = 81307200.

The previous prime is 89437913. The next prime is 89437949. The reversal of 89437931 is 13973498.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (89437913) and next prime (89437949).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89437931 is a prime.

It is a super-2 number, since 2×89437931² = 15998287003121522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89437951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4065350 + ... + 4065371.

It is an arithmetic number, because the mean of its divisors is an integer number (24392166).

Almost surely, 2^89437931 is an apocalyptic number.

89437931 is a deficient number, since it is larger than the sum of its proper divisors (8130733).

89437931 is a wasteful number, since it uses less digits than its factorization.

89437931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8130732.

The product of its digits is 163296, while the sum is 44.

The square root of 89437931 is about 9457.1629466770. The cubic root of 89437931 is about 447.2056151909.

The spelling of 89437931 in words is "eighty-nine million, four hundred thirty-seven thousand, nine hundred thirty-one".