89808431 has 4 divisors (see below), whose sum is σ = 90515712. Its totient is φ = 89101152.

The previous prime is 89808427. The next prime is 89808461. The reversal of 89808431 is 13480898.

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 89808431 - 2² = 89808427 is a prime.

It is a super-2 number, since 2×89808431² = 16131108557363522, 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 (89808401) 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, 353450 + ... + 353703.

It is an arithmetic number, because the mean of its divisors is an integer number (22628928).

Almost surely, 2^89808431 is an apocalyptic number.

89808431 is a deficient number, since it is larger than the sum of its proper divisors (707281).

89808431 is a wasteful number, since it uses less digits than its factorization.

89808431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707280.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 89808431 is about 9476.7310292104. The cubic root of 89808431 is about 447.8222864837.

The spelling of 89808431 in words is "eighty-nine million, eight hundred eight thousand, four hundred thirty-one".