388779684484 has 27 divisors (see below), whose sum is σ = 690239205943. Its totient is φ = 191608310600.

The previous prime is 388779684467. The next prime is 388779684509. The reversal of 388779684484 is 484486977883.

The square root of 388779684484 is 623522.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×388779684484² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 388779684484.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 88537929 + ... + 88542319.

Almost surely, 2^388779684484 is an apocalyptic number.

388779684484 is the 623522-nd square number.

It is an amenable number.

388779684484 is a deficient number, since it is larger than the sum of its proper divisors (301459521459).

388779684484 is an frugal number, since it uses more digits than its factorization.

388779684484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8928 (or 4464 counting only the distinct ones).

The product of its digits is 2080899072, while the sum is 76.

The spelling of 388779684484 in words is "three hundred eighty-eight billion, seven hundred seventy-nine million, six hundred eighty-four thousand, four hundred eighty-four".