89640812 has 6 divisors (see below), whose sum is σ = 156871428. Its totient is φ = 44820404.

The previous prime is 89640799. The next prime is 89640823. The reversal of 89640812 is 21804698.

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, 11205098 + ... + 11205105.

It is an arithmetic number, because the mean of its divisors is an integer number (26145238).

Almost surely, 2^89640812 is an apocalyptic number.

It is an amenable number.

89640812 is a deficient number, since it is larger than the sum of its proper divisors (67230616).

89640812 is a wasteful number, since it uses less digits than its factorization.

89640812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22410207 (or 22410205 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 89640812 is about 9467.8831847462. The cubic root of 89640812 is about 447.5435068964.

The spelling of 89640812 in words is "eighty-nine million, six hundred forty thousand, eight hundred twelve".