388973550 has 48 divisors (see below), whose sum is σ = 1102465152. Its totient is φ = 88908000.

The previous prime is 388973509. The next prime is 388973573. The reversal of 388973550 is 55379883.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 388973550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184176 + ... + 186275.

It is an arithmetic number, because the mean of its divisors is an integer number (22968024).

Almost surely, 2^388973550 is an apocalyptic number.

388973550 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

388973550 is an abundant number, since it is smaller than the sum of its proper divisors (713491602).

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

388973550 is a wasteful number, since it uses less digits than its factorization.

388973550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370473 (or 370468 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 48.

The square root of 388973550 is about 19722.4123778000. The cubic root of 388973550 is about 729.9728206557.

The spelling of 388973550 in words is "three hundred eighty-eight million, nine hundred seventy-three thousand, five hundred fifty".