89170931 has 4 divisors (see below), whose sum is σ = 93047952. Its totient is φ = 85293912.

The previous prime is 89170909. The next prime is 89170937. The reversal of 89170931 is 13907198.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13907198 = 2 ⋅6953599.

It is a cyclic number.

It is not a de Polignac number, because 89170931 - 2¹⁴ = 89154547 is a prime.

It is a super-2 number, since 2×89170931² = 15902909870813522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89170937) 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, 1938476 + ... + 1938521.

It is an arithmetic number, because the mean of its divisors is an integer number (23261988).

Almost surely, 2^89170931 is an apocalyptic number.

89170931 is a deficient number, since it is larger than the sum of its proper divisors (3877021).

89170931 is a wasteful number, since it uses less digits than its factorization.

89170931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3877020.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 89170931 is about 9443.0361113362. The cubic root of 89170931 is about 446.7601557361.

The spelling of 89170931 in words is "eighty-nine million, one hundred seventy thousand, nine hundred thirty-one".