393994996 has 12 divisors (see below), whose sum is σ = 711733120. Its totient is φ = 190642680.

The previous prime is 393994933. The next prime is 393995003. The reversal of 393994996 is 699499393.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1588566 + ... + 1588813.

Almost surely, 2^393994996 is an apocalyptic number.

It is an amenable number.

393994996 is a deficient number, since it is larger than the sum of its proper divisors (317738124).

393994996 is a wasteful number, since it uses less digits than its factorization.

393994996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3177414 (or 3177412 counting only the distinct ones).

The product of its digits is 12754584, while the sum is 61.

The square root of 393994996 is about 19849.3071919400. The cubic root of 393994996 is about 733.1005894090.

The spelling of 393994996 in words is "three hundred ninety-three million, nine hundred ninety-four thousand, nine hundred ninety-six".