89577431 has 2 divisors, whose sum is σ = 89577432. Its totient is φ = 89577430.

The previous prime is 89577427. The next prime is 89577451. The reversal of 89577431 is 13477598.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89577431 - 2² = 89577427 is a prime.

It is a super-2 number, since 2×89577431² = 16048232289119522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89577401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44788715 + 44788716.

It is an arithmetic number, because the mean of its divisors is an integer number (44788716).

Almost surely, 2^89577431 is an apocalyptic number.

89577431 is a deficient number, since it is larger than the sum of its proper divisors (1).

89577431 is an equidigital number, since it uses as much as digits as its factorization.

89577431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 44.

The square root of 89577431 is about 9464.5354349804. The cubic root of 89577431 is about 447.4380027092.

The spelling of 89577431 in words is "eighty-nine million, five hundred seventy-seven thousand, four hundred thirty-one".