394307868 has 12 divisors (see below), whose sum is σ = 920051720. Its totient is φ = 131435952.

The previous prime is 394307857. The next prime is 394307869. The reversal of 394307868 is 868703493.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394307869) 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, 16429483 + ... + 16429506.

Almost surely, 2^394307868 is an apocalyptic number.

It is an amenable number.

394307868 is an abundant number, since it is smaller than the sum of its proper divisors (525743852).

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

394307868 is a wasteful number, since it uses less digits than its factorization.

394307868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32858996 (or 32858994 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 394307868 is about 19857.1868098177. The cubic root of 394307868 is about 733.2945901478.

The spelling of 394307868 in words is "three hundred ninety-four million, three hundred seven thousand, eight hundred sixty-eight".