393338479 has 6 divisors (see below), whose sum is σ = 411184256. Its totient is φ = 376236300.

The previous prime is 393338471. The next prime is 393338497. The reversal of 393338479 is 974833393.

It is not a de Polignac number, because 393338479 - 2³ = 393338471 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 (393338471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 371247 + ... + 372304.

Almost surely, 2^393338479 is an apocalyptic number.

393338479 is a deficient number, since it is larger than the sum of its proper divisors (17845777).

393338479 is an equidigital number, since it uses as much as digits as its factorization.

393338479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743597 (or 743574 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 49.

The square root of 393338479 is about 19832.7627677033. The cubic root of 393338479 is about 732.6931725808.

The spelling of 393338479 in words is "three hundred ninety-three million, three hundred thirty-eight thousand, four hundred seventy-nine".