388804 has 12 divisors (see below), whose sum is σ = 732844. Its totient is φ = 179424.

The previous prime is 388793. The next prime is 388813. The reversal of 388804 is 408883.

It can be written as a sum of positive squares in 2 ways, for example, as 230400 + 158404 = 480^2 + 398^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

388804 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 3687 + ... + 3790.

2³⁸⁸⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

388804 is a deficient number, since it is larger than the sum of its proper divisors (344040).

388804 is a wasteful number, since it uses less digits than its factorization.

388804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7494 (or 7492 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 388804 is about 623.5414982180. The cubic root of 388804 is about 72.9866742424.

The spelling of 388804 in words is "three hundred eighty-eight thousand, eight hundred four".