394438304 has 24 divisors (see below), whose sum is σ = 836285940. Its totient is φ = 182048256.

The previous prime is 394438283. The next prime is 394438307. The reversal of 394438304 is 403834493.

It can be written as a sum of positive squares in 2 ways, for example, as 394101904 + 336400 = 19852^2 + 580^2 .

It is not an unprimeable number, because it can be changed into a prime (394438307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473669 + ... + 474500.

Almost surely, 2^394438304 is an apocalyptic number.

It is an amenable number.

394438304 is an abundant number, since it is smaller than the sum of its proper divisors (441847636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

394438304 is a wasteful number, since it uses less digits than its factorization.

394438304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948192 (or 948184 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 38.

The square root of 394438304 is about 19860.4708906914. The cubic root of 394438304 is about 733.3754385374.

The spelling of 394438304 in words is "three hundred ninety-four million, four hundred thirty-eight thousand, three hundred four".