393394444 has 12 divisors (see below), whose sum is σ = 704450824. Its totient is φ = 192122784.

The previous prime is 393394427. The next prime is 393394459. The reversal of 393394444 is 444493393.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 393394444.

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, 1143417 + ... + 1143760.

Almost surely, 2^393394444 is an apocalyptic number.

It is an amenable number.

393394444 is a deficient number, since it is larger than the sum of its proper divisors (311056380).

393394444 is a wasteful number, since it uses less digits than its factorization.

393394444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287224 (or 2287222 counting only the distinct ones).

The product of its digits is 559872, while the sum is 43.

The square root of 393394444 is about 19834.1736404621. The cubic root of 393394444 is about 732.7279206252.

The spelling of 393394444 in words is "three hundred ninety-three million, three hundred ninety-four thousand, four hundred forty-four".