388779004 has 12 divisors (see below), whose sum is σ = 685721344. Its totient is φ = 192858624.

The previous prime is 388778993. The next prime is 388779023. The reversal of 388779004 is 400977883.

It is a super-2 number, since 2×388779004² = 302298227902464032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382149 + ... + 383164.

Almost surely, 2^388779004 is an apocalyptic number.

It is an amenable number.

388779004 is a deficient number, since it is larger than the sum of its proper divisors (296942340).

388779004 is a wasteful number, since it uses less digits than its factorization.

388779004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765444 (or 765442 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 388779004 is about 19717.4796563861. The cubic root of 388779004 is about 729.8511011754.

The spelling of 388779004 in words is "three hundred eighty-eight million, seven hundred seventy-nine thousand, four".