388085994 has 12 divisors (see below), whose sum is σ = 840853026. Its totient is φ = 129361992.

The previous prime is 388085987. The next prime is 388086053. The reversal of 388085994 is 499580883.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 214241769 + 173844225 = 14637^2 + 13185^2 .

It is a super-2 number, since 2×388085994² = 301221477477936072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 388085994.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10780149 + ... + 10780184.

Almost surely, 2^388085994 is an apocalyptic number.

388085994 is an abundant number, since it is smaller than the sum of its proper divisors (452767032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

388085994 is a wasteful number, since it uses less digits than its factorization.

388085994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21560341 (or 21560338 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The square root of 388085994 is about 19699.8983246107. The cubic root of 388085994 is about 729.4171829036.

The spelling of 388085994 in words is "three hundred eighty-eight million, eighty-five thousand, nine hundred ninety-four".