393910472 has 16 divisors (see below), whose sum is σ = 740992560. Its totient is φ = 196312464.

The previous prime is 393910463. The next prime is 393910513. The reversal of 393910472 is 274019393.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77738 + ... + 82649.

It is an arithmetic number, because the mean of its divisors is an integer number (46312035).

Almost surely, 2^393910472 is an apocalyptic number.

It is an amenable number.

393910472 is a deficient number, since it is larger than the sum of its proper divisors (347082088).

393910472 is a wasteful number, since it uses less digits than its factorization.

393910472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160700 (or 160696 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 393910472 is about 19847.1779354144. The cubic root of 393910472 is about 733.0481614794.

The spelling of 393910472 in words is "three hundred ninety-three million, nine hundred ten thousand, four hundred seventy-two".