388888888 has 8 divisors (see below), whose sum is σ = 729166680. Its totient is φ = 194444440.

The previous prime is 388888867. The next prime is 388888891. The reversal of 388888888 is 888888883.

It is a tau number, because it is divible by the number of its divisors (8).

388888888 is a modest number, since divided by 88888 gives 3888 as remainder.

It is a plaindrome in base 10.

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 as a sum of consecutive naturals, namely, 24305548 + ... + 24305563.

It is an arithmetic number, because the mean of its divisors is an integer number (91145835).

Almost surely, 2^388888888 is an apocalyptic number.

It is an amenable number.

388888888 is a deficient number, since it is larger than the sum of its proper divisors (340277792).

388888888 is a wasteful number, since it uses less digits than its factorization.

388888888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48611117 (or 48611113 counting only the distinct ones).

The product of its digits is 50331648, while the sum is 67.

The square root of 388888888 is about 19720.2659211279. The cubic root of 388888888 is about 729.9198560919.

The spelling of 388888888 in words is "three hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred eighty-eight".