388684 has 6 divisors (see below), whose sum is σ = 680204. Its totient is φ = 194340.

The previous prime is 388673. The next prime is 388691. The reversal of 388684 is 486883.

388684 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

388684 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 as a sum of consecutive naturals, namely, 48582 + ... + 48589.

2³⁸⁸⁶⁸⁴ is an apocalyptic number.

It is an amenable number.

388684 is a deficient number, since it is larger than the sum of its proper divisors (291520).

388684 is a wasteful number, since it uses less digits than its factorization.

388684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97175 (or 97173 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The square root of 388684 is about 623.4452662424. The cubic root of 388684 is about 72.9791646299.

The spelling of 388684 in words is "three hundred eighty-eight thousand, six hundred eighty-four".