388299400 has 24 divisors (see below), whose sum is σ = 902796570. Its totient is φ = 155319680.

The previous prime is 388299389. The next prime is 388299403. The reversal of 388299400 is 4992883.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 298391076 + 89908324 = 17274^2 + 9482^2 .

It is not an unprimeable number, because it can be changed into a prime (388299403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 970549 + ... + 970948.

Almost surely, 2^388299400 is an apocalyptic number.

It is an amenable number.

388299400 is an abundant number, since it is smaller than the sum of its proper divisors (514497170).

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

388299400 is a wasteful number, since it uses less digits than its factorization.

388299400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941513 (or 1941504 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 388299400 is about 19705.3140040954. The cubic root of 388299400 is about 729.5508590149.

The spelling of 388299400 in words is "three hundred eighty-eight million, two hundred ninety-nine thousand, four hundred".