89772031 has 2 divisors, whose sum is σ = 89772032. Its totient is φ = 89772030.

The previous prime is 89772029. The next prime is 89772041. The reversal of 89772031 is 13027798.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89772031 - 2¹ = 89772029 is a prime.

It is a super-2 number, since 2×89772031² = 16118035099729922, which contains 22 as substring.

Together with 89772029, it forms a pair of twin primes.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89772041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44886015 + 44886016.

It is an arithmetic number, because the mean of its divisors is an integer number (44886016).

Almost surely, 2^89772031 is an apocalyptic number.

89772031 is a deficient number, since it is larger than the sum of its proper divisors (1).

89772031 is an equidigital number, since it uses as much as digits as its factorization.

89772031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 89772031 is about 9474.8103411097. The cubic root of 89772031 is about 447.7617764484.

The spelling of 89772031 in words is "eighty-nine million, seven hundred seventy-two thousand, thirty-one".