393321934 has 16 divisors (see below), whose sum is σ = 594934272. Its totient is φ = 195016248.

The previous prime is 393321923. The next prime is 393321947. The reversal of 393321934 is 439123393.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 393321893 and 393321902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182467 + ... + 184609.

It is an arithmetic number, because the mean of its divisors is an integer number (37183392).

Almost surely, 2^393321934 is an apocalyptic number.

393321934 is a deficient number, since it is larger than the sum of its proper divisors (201612338).

393321934 is a wasteful number, since it uses less digits than its factorization.

393321934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871.

The product of its digits is 52488, while the sum is 37.

The square root of 393321934 is about 19832.3456504772. The cubic root of 393321934 is about 732.6828993436.

The spelling of 393321934 in words is "three hundred ninety-three million, three hundred twenty-one thousand, nine hundred thirty-four".