393662972 has 12 divisors (see below), whose sum is σ = 690401376. Its totient is φ = 196405440.

The previous prime is 393662923. The next prime is 393662981. The reversal of 393662972 is 279266393.

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, 104429 + ... + 108132.

It is an arithmetic number, because the mean of its divisors is an integer number (57533448).

Almost surely, 2^393662972 is an apocalyptic number.

It is an amenable number.

393662972 is a deficient number, since it is larger than the sum of its proper divisors (296738404).

393662972 is a wasteful number, since it uses less digits than its factorization.

393662972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213028 (or 213026 counting only the distinct ones).

The product of its digits is 734832, while the sum is 47.

The square root of 393662972 is about 19840.9418123233. The cubic root of 393662972 is about 732.8946008402.

The spelling of 393662972 in words is "three hundred ninety-three million, six hundred sixty-two thousand, nine hundred seventy-two".