393424013 has 16 divisors (see below), whose sum is σ = 439427520. Its totient is φ = 350044416.

The previous prime is 393423941. The next prime is 393424033. The reversal of 393424013 is 310424393.

It is not a de Polignac number, because 393424013 - 2⁸ = 393423757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393424033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197006 + ... + 198992.

It is an arithmetic number, because the mean of its divisors is an integer number (27464220).

Almost surely, 2^393424013 is an apocalyptic number.

It is an amenable number.

393424013 is a deficient number, since it is larger than the sum of its proper divisors (46003507).

393424013 is a wasteful number, since it uses less digits than its factorization.

393424013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 393424013 is about 19834.9190318489. The cubic root of 393424013 is about 732.7462783570.

The spelling of 393424013 in words is "three hundred ninety-three million, four hundred twenty-four thousand, thirteen".