388912398 has 16 divisors (see below), whose sum is σ = 888942720. Its totient is φ = 111117816.

The previous prime is 388912397. The next prime is 388912411. The reversal of 388912398 is 893219883.

It is a super-2 number, since 2×388912398² = 302505706636220808, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 388912398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388912397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4629868 + ... + 4629951.

It is an arithmetic number, because the mean of its divisors is an integer number (55558920).

Almost surely, 2^388912398 is an apocalyptic number.

388912398 is an abundant number, since it is smaller than the sum of its proper divisors (500030322).

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

388912398 is a wasteful number, since it uses less digits than its factorization.

388912398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9259831.

The product of its digits is 746496, while the sum is 51.

The square root of 388912398 is about 19720.8619994157. The cubic root of 388912398 is about 729.9345647233.

The spelling of 388912398 in words is "three hundred eighty-eight million, nine hundred twelve thousand, three hundred ninety-eight".