394164868 has 12 divisors (see below), whose sum is σ = 713574540. Its totient is φ = 190286432.

The previous prime is 394164853. The next prime is 394164871. The reversal of 394164868 is 868461493.

It can be written as a sum of positive squares in 2 ways, for example, as 98049604 + 296115264 = 9902^2 + 17208^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1698871 + ... + 1699102.

It is an arithmetic number, because the mean of its divisors is an integer number (59464545).

Almost surely, 2^394164868 is an apocalyptic number.

It is an amenable number.

394164868 is a deficient number, since it is larger than the sum of its proper divisors (319409672).

394164868 is a wasteful number, since it uses less digits than its factorization.

394164868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3398006 (or 3398004 counting only the distinct ones).

The product of its digits is 995328, while the sum is 49.

The square root of 394164868 is about 19853.5857718448. The cubic root of 394164868 is about 733.2059336996.

The spelling of 394164868 in words is "three hundred ninety-four million, one hundred sixty-four thousand, eight hundred sixty-eight".