394386716 has 24 divisors (see below), whose sum is σ = 705621504. Its totient is φ = 192818880.

The previous prime is 394386709. The next prime is 394386731. The reversal of 394386716 is 617683493.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37541 + ... + 46883.

It is an arithmetic number, because the mean of its divisors is an integer number (29400896).

Almost surely, 2^394386716 is an apocalyptic number.

It is an amenable number.

394386716 is a deficient number, since it is larger than the sum of its proper divisors (311234788).

394386716 is a wasteful number, since it uses less digits than its factorization.

394386716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9581 (or 9579 counting only the distinct ones).

The product of its digits is 653184, while the sum is 47.

The square root of 394386716 is about 19859.1720874764. The cubic root of 394386716 is about 733.3434647820.

The spelling of 394386716 in words is "three hundred ninety-four million, three hundred eighty-six thousand, seven hundred sixteen".