388538404 has 12 divisors (see below), whose sum is σ = 703388700. Its totient is φ = 187570208.

The previous prime is 388538393. The next prime is 388538413. The reversal of 388538404 is 404835883.

It can be written as a sum of positive squares in 2 ways, for example, as 293436900 + 95101504 = 17130^2 + 9752^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1674619 + ... + 1674850.

It is an arithmetic number, because the mean of its divisors is an integer number (58615725).

Almost surely, 2^388538404 is an apocalyptic number.

It is an amenable number.

388538404 is a deficient number, since it is larger than the sum of its proper divisors (314850296).

388538404 is a wasteful number, since it uses less digits than its factorization.

388538404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349502 (or 3349500 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 43.

The square root of 388538404 is about 19711.3775266976. The cubic root of 388538404 is about 729.7005114145.

The spelling of 388538404 in words is "three hundred eighty-eight million, five hundred thirty-eight thousand, four hundred four".