394433976 has 16 divisors (see below), whose sum is σ = 986085000. Its totient is φ = 131477984.

The previous prime is 394433971. The next prime is 394433999. The reversal of 394433976 is 679334493.

It is a super-2 number, since 2×394433976² = 311156322846337152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394433971) 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, 8217351 + ... + 8217398.

Almost surely, 2^394433976 is an apocalyptic number.

It is an amenable number.

394433976 is an abundant number, since it is smaller than the sum of its proper divisors (591651024).

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

394433976 is a wasteful number, since it uses less digits than its factorization.

394433976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16434758 (or 16434754 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 48.

The square root of 394433976 is about 19860.3619302368. The cubic root of 394433976 is about 733.3727561910.

The spelling of 394433976 in words is "three hundred ninety-four million, four hundred thirty-three thousand, nine hundred seventy-six".