394551968 has 12 divisors (see below), whose sum is σ = 776774250. Its totient is φ = 197275968.

The previous prime is 394551923. The next prime is 394552001. The reversal of 394551968 is 869155493.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 344028304 + 50523664 = 18548^2 + 7108^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6164843 + ... + 6164906.

Almost surely, 2^394551968 is an apocalyptic number.

It is an amenable number.

394551968 is a deficient number, since it is larger than the sum of its proper divisors (382222282).

394551968 is a wasteful number, since it uses less digits than its factorization.

394551968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12329759 (or 12329751 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 50.

The square root of 394551968 is about 19863.3322481400. The cubic root of 394551968 is about 733.4458765749.

The spelling of 394551968 in words is "three hundred ninety-four million, five hundred fifty-one thousand, nine hundred sixty-eight".