89855388 has 144 divisors (see below), whose sum is σ = 278853120. Its totient is φ = 23836032.

The previous prime is 89855371. The next prime is 89855393. The reversal of 89855388 is 88355898.

89855388 is a `hidden beast` number, since 8 + 9 + 8 + 553 + 88 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 214243 + ... + 214661.

It is an arithmetic number, because the mean of its divisors is an integer number (1936480).

Almost surely, 2^89855388 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 89855388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139426560).

89855388 is an abundant number, since it is smaller than the sum of its proper divisors (188997732).

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

89855388 is a wasteful number, since it uses less digits than its factorization.

89855388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 491 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 54.

The square root of 89855388 is about 9479.2081947808. The cubic root of 89855388 is about 447.9003219457.

The spelling of 89855388 in words is "eighty-nine million, eight hundred fifty-five thousand, three hundred eighty-eight".