394309912 has 16 divisors (see below), whose sum is σ = 739771200. Its totient is φ = 197037600.

The previous prime is 394309901. The next prime is 394309919. The reversal of 394309912 is 219903493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394309919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 537 + ... + 28087.

It is an arithmetic number, because the mean of its divisors is an integer number (46235700).

Almost surely, 2^394309912 is an apocalyptic number.

It is an amenable number.

394309912 is a deficient number, since it is larger than the sum of its proper divisors (345461288).

394309912 is a wasteful number, since it uses less digits than its factorization.

394309912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29346 (or 29342 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 394309912 is about 19857.2382772630. The cubic root of 394309912 is about 733.2958572217.

The spelling of 394309912 in words is "three hundred ninety-four million, three hundred nine thousand, nine hundred twelve".