388995980 has 24 divisors (see below), whose sum is σ = 824826912. Its totient is φ = 154086912.

The previous prime is 388995961. The next prime is 388996009. The reversal of 388995980 is 89599883.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92357 + ... + 96476.

It is an arithmetic number, because the mean of its divisors is an integer number (34367788).

Almost surely, 2^388995980 is an apocalyptic number.

It is an amenable number.

388995980 is an abundant number, since it is smaller than the sum of its proper divisors (435830932).

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

388995980 is a wasteful number, since it uses less digits than its factorization.

388995980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188945 (or 188943 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 59.

The square root of 388995980 is about 19722.9810120073. The cubic root of 388995980 is about 729.9868515803.

The spelling of 388995980 in words is "three hundred eighty-eight million, nine hundred ninety-five thousand, nine hundred eighty".