388394942 has 8 divisors (see below), whose sum is σ = 627407256. Its totient is φ = 179259192.

The previous prime is 388394917. The next prime is 388394953. The reversal of 388394942 is 249493883.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7469108 + ... + 7469159.

It is an arithmetic number, because the mean of its divisors is an integer number (78425907).

Almost surely, 2^388394942 is an apocalyptic number.

388394942 is a deficient number, since it is larger than the sum of its proper divisors (239012314).

388394942 is a wasteful number, since it uses less digits than its factorization.

388394942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14938282.

The product of its digits is 1492992, while the sum is 50.

The square root of 388394942 is about 19707.7381249092. The cubic root of 388394942 is about 729.6106900217.

The spelling of 388394942 in words is "three hundred eighty-eight million, three hundred ninety-four thousand, nine hundred forty-two".