89877431 has 8 divisors (see below), whose sum is σ = 104017920. Its totient is φ = 76062168.

The previous prime is 89877413. The next prime is 89877443. The reversal of 89877431 is 13477898.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 89877431 - 2²² = 85683127 is a prime.

It is a super-2 number, since 2×89877431² = 16155905206319522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89877481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80711 + ... + 81816.

It is an arithmetic number, because the mean of its divisors is an integer number (13002240).

Almost surely, 2^89877431 is an apocalyptic number.

89877431 is a deficient number, since it is larger than the sum of its proper divisors (14140489).

89877431 is a wasteful number, since it uses less digits than its factorization.

89877431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162613.

The product of its digits is 338688, while the sum is 47.

The square root of 89877431 is about 9480.3708260806. The cubic root of 89877431 is about 447.9369447155.

The spelling of 89877431 in words is "eighty-nine million, eight hundred seventy-seven thousand, four hundred thirty-one".