520089979 has 4 divisors (see below), whose sum is σ = 527852584. Its totient is φ = 512327376.

The previous prime is 520089971. The next prime is 520090009. The reversal of 520089979 is 979980025.

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

It is a cyclic number.

It is not a de Polignac number, because 520089979 - 2³ = 520089971 is a prime.

It is a super-3 number, since 3×520089979³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520089971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3881202 + ... + 3881335.

It is an arithmetic number, because the mean of its divisors is an integer number (131963146).

Almost surely, 2^520089979 is an apocalyptic number.

520089979 is a deficient number, since it is larger than the sum of its proper divisors (7762605).

520089979 is an equidigital number, since it uses as much as digits as its factorization.

520089979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7762604.

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 520089979 is about 22805.4813367313. The cubic root of 520089979 is about 804.1915312073.

The spelling of 520089979 in words is "five hundred twenty million, eighty-nine thousand, nine hundred seventy-nine".