393438704 has 10 divisors (see below), whose sum is σ = 762287520. Its totient is φ = 196719344.

The previous prime is 393438671. The next prime is 393438707. The reversal of 393438704 is 407834393.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393438707) by changing a digit.

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, 12294944 + ... + 12294975.

It is an arithmetic number, because the mean of its divisors is an integer number (76228752).

Almost surely, 2^393438704 is an apocalyptic number.

It is an amenable number.

393438704 is a deficient number, since it is larger than the sum of its proper divisors (368848816).

393438704 is a wasteful number, since it uses less digits than its factorization.

393438704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24589927 (or 24589921 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 393438704 is about 19835.2893601278. The cubic root of 393438704 is about 732.7553988319.

The spelling of 393438704 in words is "three hundred ninety-three million, four hundred thirty-eight thousand, seven hundred four".