393314665 has 4 divisors (see below), whose sum is σ = 471977604. Its totient is φ = 314651728.

The previous prime is 393314627. The next prime is 393314707. The reversal of 393314665 is 566413393.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52838361 + 340476304 = 7269^2 + 18452^2 .

It is a cyclic number.

It is not a de Polignac number, because 393314665 - 2¹¹ = 393312617 is a prime.

It is a Duffinian number.

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, 39331462 + ... + 39331471.

It is an arithmetic number, because the mean of its divisors is an integer number (117994401).

Almost surely, 2^393314665 is an apocalyptic number.

It is an amenable number.

393314665 is a deficient number, since it is larger than the sum of its proper divisors (78662939).

393314665 is an equidigital number, since it uses as much as digits as its factorization.

393314665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78662938.

The product of its digits is 174960, while the sum is 40.

The square root of 393314665 is about 19832.1623884033. The cubic root of 393314665 is about 732.6783857341.

The spelling of 393314665 in words is "three hundred ninety-three million, three hundred fourteen thousand, six hundred sixty-five".