394388379 has 32 divisors (see below), whose sum is σ = 728455680. Its totient is φ = 204876000.

The previous prime is 394388353. The next prime is 394388387. The reversal of 394388379 is 973883493.

It is not a de Polignac number, because 394388379 - 2⁹ = 394387867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (394388179) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92772 + ... + 96929.

It is an arithmetic number, because the mean of its divisors is an integer number (22764240).

Almost surely, 2^394388379 is an apocalyptic number.

394388379 is a deficient number, since it is larger than the sum of its proper divisors (334067301).

394388379 is a wasteful number, since it uses less digits than its factorization.

394388379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189728 (or 189722 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 394388379 is about 19859.2139572542. The cubic root of 394388379 is about 733.3444955372.

The spelling of 394388379 in words is "three hundred ninety-four million, three hundred eighty-eight thousand, three hundred seventy-nine".