388904 has 16 divisors (see below), whose sum is σ = 736020. Its totient is φ = 192640.

The previous prime is 388903. The next prime is 388931. The reversal of 388904 is 409883.

It can be written as a sum of positive squares in 2 ways, for example, as 348100 + 40804 = 590^2 + 202^2 .

It is not an unprimeable number, because it can be changed into a prime (388901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1244 + ... + 1524.

2³⁸⁸⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

388904 is a deficient number, since it is larger than the sum of its proper divisors (347116).

388904 is a wasteful number, since it uses less digits than its factorization.

388904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 388904 is about 623.6216801876. The cubic root of 388904 is about 72.9929310726.

The spelling of 388904 in words is "three hundred eighty-eight thousand, nine hundred four".