394072568 has 16 divisors (see below), whose sum is σ = 741297480. Its totient is φ = 196393248.

The previous prime is 394072519. The next prime is 394072571. The reversal of 394072568 is 865270493.

It is a super-2 number, since 2×394072568² = 310586377700229248, which contains 22 as substring.

It is a congruent number.

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, 77771 + ... + 82682.

Almost surely, 2^394072568 is an apocalyptic number.

It is an amenable number.

394072568 is a deficient number, since it is larger than the sum of its proper divisors (347224912).

394072568 is a wasteful number, since it uses less digits than its factorization.

394072568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160766 (or 160762 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 394072568 is about 19851.2611186292. The cubic root of 394072568 is about 733.1486986048.

The spelling of 394072568 in words is "three hundred ninety-four million, seventy-two thousand, five hundred sixty-eight".