388888944 has 40 divisors (see below), whose sum is σ = 1031786640. Its totient is φ = 126125568.

The previous prime is 388888937. The next prime is 388888961. The reversal of 388888944 is 449888883.

It is a super-2 number, since 2×388888944² = 302469221530870272, which contains 22 as substring.

It is a congruent 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, 107709 + ... + 111260.

It is an arithmetic number, because the mean of its divisors is an integer number (25794666).

Almost surely, 2^388888944 is an apocalyptic number.

It is an amenable number.

388888944 is an abundant number, since it is smaller than the sum of its proper divisors (642897696).

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

388888944 is a wasteful number, since it uses less digits than its factorization.

388888944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219017 (or 219011 counting only the distinct ones).

The product of its digits is 14155776, while the sum is 60.

The square root of 388888944 is about 19720.2673409870. The cubic root of 388888944 is about 729.9198911280.

The spelling of 388888944 in words is "three hundred eighty-eight million, eight hundred eighty-eight thousand, nine hundred forty-four".