89216431 has 4 divisors (see below), whose sum is σ = 90099864. Its totient is φ = 88333000.

The previous prime is 89216423. The next prime is 89216447. The reversal of 89216431 is 13461298.

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

It is a cyclic number.

It is not a de Polignac number, because 89216431 - 2³ = 89216423 is a prime.

It is a super-2 number, since 2×89216431² = 15919143120755522, 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 (89216131) 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, 441565 + ... + 441766.

It is an arithmetic number, because the mean of its divisors is an integer number (22524966).

Almost surely, 2^89216431 is an apocalyptic number.

89216431 is a deficient number, since it is larger than the sum of its proper divisors (883433).

89216431 is a wasteful number, since it uses less digits than its factorization.

89216431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883432.

The product of its digits is 10368, while the sum is 34.

The square root of 89216431 is about 9445.4449868707. Note that the first 3 decimals coincide. The cubic root of 89216431 is about 446.8361301611.

The spelling of 89216431 in words is "eighty-nine million, two hundred sixteen thousand, four hundred thirty-one".