388888842 has 16 divisors (see below), whose sum is σ = 778298400. Its totient is φ = 129542832.

The previous prime is 388888771. The next prime is 388888867. The reversal of 388888842 is 248888883.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11628 + ... + 30215.

It is an arithmetic number, because the mean of its divisors is an integer number (48643650).

Almost surely, 2^388888842 is an apocalyptic number.

388888842 is an abundant number, since it is smaller than the sum of its proper divisors (389409558).

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

388888842 is a wasteful number, since it uses less digits than its factorization.

388888842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43397.

The product of its digits is 6291456, while the sum is 57.

The square root of 388888842 is about 19720.2647548150. The cubic root of 388888842 is about 729.9198273122.

The spelling of 388888842 in words is "three hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred forty-two".