89640944 has 10 divisors (see below), whose sum is σ = 173679360. Its totient is φ = 44820464.

The previous prime is 89640937. The next prime is 89640977. The reversal of 89640944 is 44904698.

It is a happy number.

It is a super-2 number, since 2×89640944² = 16070997682422272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 89640895 and 89640904.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2801264 + ... + 2801295.

It is an arithmetic number, because the mean of its divisors is an integer number (17367936).

Almost surely, 2^89640944 is an apocalyptic number.

It is an amenable number.

89640944 is a deficient number, since it is larger than the sum of its proper divisors (84038416).

89640944 is a wasteful number, since it uses less digits than its factorization.

89640944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5602567 (or 5602561 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 89640944 is about 9467.8901556788. The cubic root of 89640944 is about 447.5437265721.

The spelling of 89640944 in words is "eighty-nine million, six hundred forty thousand, nine hundred forty-four".