393512164 has 6 divisors (see below), whose sum is σ = 688646294. Its totient is φ = 196756080.

The previous prime is 393512113. The next prime is 393512177. The reversal of 393512164 is 461215393.

It can be written as a sum of positive squares in only one way, i.e., 244672164 + 148840000 = 15642^2 + 12200^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49189017 + ... + 49189024.

Almost surely, 2^393512164 is an apocalyptic number.

It is an amenable number.

393512164 is a deficient number, since it is larger than the sum of its proper divisors (295134130).

393512164 is a wasteful number, since it uses less digits than its factorization.

393512164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98378045 (or 98378043 counting only the distinct ones).

The product of its digits is 19440, while the sum is 34.

The square root of 393512164 is about 19837.1410238472. The cubic root of 393512164 is about 732.8010009052.

The spelling of 393512164 in words is "three hundred ninety-three million, five hundred twelve thousand, one hundred sixty-four".