394388038 has 32 divisors (see below), whose sum is σ = 675267840. Its totient is φ = 171003360.

The previous prime is 394387993. The next prime is 394388041. The reversal of 394388038 is 830883493.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235468 + ... + 237136.

It is an arithmetic number, because the mean of its divisors is an integer number (21102120).

Almost surely, 2^394388038 is an apocalyptic number.

394388038 is a deficient number, since it is larger than the sum of its proper divisors (280879802).

394388038 is a wasteful number, since it uses less digits than its factorization.

394388038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172.

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 394388038 is about 19859.2053718169. The cubic root of 394388038 is about 733.3442841799.

The spelling of 394388038 in words is "three hundred ninety-four million, three hundred eighty-eight thousand, thirty-eight".