394012684 has 18 divisors (see below), whose sum is σ = 746643660. Its totient is φ = 181851696.

The previous prime is 394012673. The next prime is 394012691. The reversal of 394012684 is 486210493.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 290754 + ... + 292105.

Almost surely, 2^394012684 is an apocalyptic number.

It is an amenable number.

394012684 is a deficient number, since it is larger than the sum of its proper divisors (352630976).

394012684 is a wasteful number, since it uses less digits than its factorization.

394012684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582889 (or 582874 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 394012684 is about 19849.7527440520. The cubic root of 394012684 is about 733.1115598438. Note that the first 3 decimals are identical.

The spelling of 394012684 in words is "three hundred ninety-four million, twelve thousand, six hundred eighty-four".