89644890 has 32 divisors (see below), whose sum is σ = 215424000. Its totient is φ = 23874624.

The previous prime is 89644883. The next prime is 89644909. The reversal of 89644890 is 9844698.

It is a super-2 number, since 2×89644890² = 16072412606224200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31236 + ... + 33984.

It is an arithmetic number, because the mean of its divisors is an integer number (6732000).

Almost surely, 2^89644890 is an apocalyptic number.

89644890 is an abundant number, since it is smaller than the sum of its proper divisors (125779110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89644890 is a wasteful number, since it uses less digits than its factorization.

89644890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3846.

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 89644890 is about 9468.0985419460. The cubic root of 89644890 is about 447.5502934434.

The spelling of 89644890 in words is "eighty-nine million, six hundred forty-four thousand, eight hundred ninety".