388942944 has 48 divisors (see below), whose sum is σ = 1099515312. Its totient is φ = 119674368.

The previous prime is 388942943. The next prime is 388942951. The reversal of 388942944 is 449249883.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×388942944² = 302553227374774272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388942943) 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, 154579 + ... + 157074.

It is an arithmetic number, because the mean of its divisors is an integer number (22906569).

Almost surely, 2^388942944 is an apocalyptic number.

It is an amenable number.

388942944 is an abundant number, since it is smaller than the sum of its proper divisors (710572368).

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

388942944 is a wasteful number, since it uses less digits than its factorization.

388942944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311679 (or 311671 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 51.

The square root of 388942944 is about 19721.6364432569. The cubic root of 388942944 is about 729.9536744231.

The spelling of 388942944 in words is "three hundred eighty-eight million, nine hundred forty-two thousand, nine hundred forty-four".