88639904 has 48 divisors (see below), whose sum is σ = 186375168. Its totient is φ = 41352192.

The previous prime is 88639877. The next prime is 88639913. The reversal of 88639904 is 40993688.

It is a super-2 number, since 2×88639904² = 15714065162258432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68447 + ... + 69729.

It is an arithmetic number, because the mean of its divisors is an integer number (3882816).

Almost surely, 2^88639904 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 88639904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93187584).

88639904 is an abundant number, since it is smaller than the sum of its proper divisors (97735264).

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

88639904 is a wasteful number, since it uses less digits than its factorization.

88639904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437 (or 1429 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 88639904 is about 9414.8767384390. The cubic root of 88639904 is about 445.8715469928.

The spelling of 88639904 in words is "eighty-eight million, six hundred thirty-nine thousand, nine hundred four".