89564873 has 2 divisors, whose sum is σ = 89564874. Its totient is φ = 89564872.

The previous prime is 89564861. The next prime is 89564887. The reversal of 89564873 is 37846598.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48052624 + 41512249 = 6932^2 + 6443^2 .

It is a cyclic number.

It is not a de Polignac number, because 89564873 - 2¹⁰ = 89563849 is a prime.

It is a super-2 number, since 2×89564873² = 16043732951012258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89564833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44782436 + 44782437.

It is an arithmetic number, because the mean of its divisors is an integer number (44782437).

Almost surely, 2^89564873 is an apocalyptic number.

It is an amenable number.

89564873 is a deficient number, since it is larger than the sum of its proper divisors (1).

89564873 is an equidigital number, since it uses as much as digits as its factorization.

89564873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 50.

The square root of 89564873 is about 9463.8719877226. The cubic root of 89564873 is about 447.4170927212.

The spelling of 89564873 in words is "eighty-nine million, five hundred sixty-four thousand, eight hundred seventy-three".