394466872 has 16 divisors (see below), whose sum is σ = 742698000. Its totient is φ = 196414080.

The previous prime is 394466857. The next prime is 394466959. The reversal of 394466872 is 278664493.

It is a super-2 number, since 2×394466872² = 311208226210928768, 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100372 + ... + 104227.

It is an arithmetic number, because the mean of its divisors is an integer number (46418625).

Almost surely, 2^394466872 is an apocalyptic number.

It is an amenable number.

394466872 is a deficient number, since it is larger than the sum of its proper divisors (348231128).

394466872 is a wasteful number, since it uses less digits than its factorization.

394466872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204846 (or 204842 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 49.

The square root of 394466872 is about 19861.1900952586. The cubic root of 394466872 is about 733.3931435148.

The spelling of 394466872 in words is "three hundred ninety-four million, four hundred sixty-six thousand, eight hundred seventy-two".