388900442 has 16 divisors (see below), whose sum is σ = 668215680. Its totient is φ = 166289328.

The previous prime is 388900439. The next prime is 388900481. The reversal of 388900442 is 244009883.

It is a junction number, because it is equal to n+sod(n) for n = 388900396 and 388900405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25493 + ... + 37784.

It is an arithmetic number, because the mean of its divisors is an integer number (41763480).

Almost surely, 2^388900442 is an apocalyptic number.

388900442 is a deficient number, since it is larger than the sum of its proper divisors (279315238).

388900442 is a wasteful number, since it uses less digits than its factorization.

388900442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63725.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 388900442 is about 19720.5588663202. The cubic root of 388900442 is about 729.9270847294.

The spelling of 388900442 in words is "three hundred eighty-eight million, nine hundred thousand, four hundred forty-two".