388499904 has 168 divisors, whose sum is σ = 1210249040. Its totient is φ = 119149056.

The previous prime is 388499893. The next prime is 388499927. The reversal of 388499904 is 409994883.

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, 1265319 + ... + 1265625.

Almost surely, 2^388499904 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 388499904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (605124520).

388499904 is an abundant number, since it is smaller than the sum of its proper divisors (821749136).

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

388499904 is a wasteful number, since it uses less digits than its factorization.

388499904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The square root of 388499904 is about 19710.4009091647. The cubic root of 388499904 is about 729.6764087797.

It can be divided in two parts, 388499 and 904, that added together give a triangular number (389403 = T₈₈₂).

The spelling of 388499904 in words is "three hundred eighty-eight million, four hundred ninety-nine thousand, nine hundred four".