89440564 has 12 divisors (see below), whose sum is σ = 156590784. Its totient is φ = 44700344.

The previous prime is 89440531. The next prime is 89440567. The reversal of 89440564 is 46504498.

It is a super-2 number, since 2×89440564² = 15999228977276192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89440567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10347 + ... + 16909.

It is an arithmetic number, because the mean of its divisors is an integer number (13049232).

Almost surely, 2^89440564 is an apocalyptic number.

It is an amenable number.

89440564 is a deficient number, since it is larger than the sum of its proper divisors (67150220).

89440564 is a wasteful number, since it uses less digits than its factorization.

89440564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9974 (or 9972 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 89440564 is about 9457.3021523054. The cubic root of 89440564 is about 447.2100036378.

The spelling of 89440564 in words is "eighty-nine million, four hundred forty thousand, five hundred sixty-four".