399968674 has 24 divisors (see below), whose sum is σ = 702112320. Its totient is φ = 170381736.

The previous prime is 399968669. The next prime is 399968683. The reversal of 399968674 is 476869993.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4147 + ... + 28585.

It is an arithmetic number, because the mean of its divisors is an integer number (29254680).

Almost surely, 2^399968674 is an apocalyptic number.

399968674 is a deficient number, since it is larger than the sum of its proper divisors (302143646).

399968674 is a wasteful number, since it uses less digits than its factorization.

399968674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24622 (or 24615 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 61.

The square root of 399968674 is about 19999.2168346663. The cubic root of 399968674 is about 736.7870648975.

The spelling of 399968674 in words is "three hundred ninety-nine million, nine hundred sixty-eight thousand, six hundred seventy-four".