520604939 has 2 divisors, whose sum is σ = 520604940. Its totient is φ = 520604938.

The previous prime is 520604893. The next prime is 520604963. The reversal of 520604939 is 939406025.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520604939 is a prime.

It is a super-2 number, since 2×520604939² = 542059005022387442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (520604989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260302469 + 260302470.

It is an arithmetic number, because the mean of its divisors is an integer number (260302470).

Almost surely, 2^520604939 is an apocalyptic number.

520604939 is a deficient number, since it is larger than the sum of its proper divisors (1).

520604939 is an equidigital number, since it uses as much as digits as its factorization.

520604939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 520604939 is about 22816.7688115561. The cubic root of 520604939 is about 804.4568634140.

The spelling of 520604939 in words is "five hundred twenty million, six hundred four thousand, nine hundred thirty-nine".