388940942 has 32 divisors (see below), whose sum is σ = 651915264. Its totient is φ = 172821600.

The previous prime is 388940939. The next prime is 388940957. The reversal of 388940942 is 249049883.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168923 + ... + 171209.

It is an arithmetic number, because the mean of its divisors is an integer number (20372352).

Almost surely, 2^388940942 is an apocalyptic number.

388940942 is a deficient number, since it is larger than the sum of its proper divisors (262974322).

388940942 is a wasteful number, since it uses less digits than its factorization.

388940942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544.

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 388940942 is about 19721.5856867545. The cubic root of 388940942 is about 729.9524219945.

The spelling of 388940942 in words is "three hundred eighty-eight million, nine hundred forty thousand, nine hundred forty-two".