89599644 has 72 divisors (see below), whose sum is σ = 234784368. Its totient is φ = 28788480.

The previous prime is 89599603. The next prime is 89599663. The reversal of 89599644 is 44699598.

89599644 is a `hidden beast` number, since 8 + 9 + 599 + 6 + 44 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 182239 + ... + 182729.

It is an arithmetic number, because the mean of its divisors is an integer number (3260894).

Almost surely, 2^89599644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89599644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117392184).

89599644 is an abundant number, since it is smaller than the sum of its proper divisors (145184724).

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

89599644 is a wasteful number, since it uses less digits than its factorization.

89599644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675 (or 670 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 89599644 is about 9465.7088482585. The cubic root of 89599644 is about 447.4749841930.

The spelling of 89599644 in words is "eighty-nine million, five hundred ninety-nine thousand, six hundred forty-four".