520929089 has 4 divisors (see below), whose sum is σ = 521295060. Its totient is φ = 520563120.

The previous prime is 520929077. The next prime is 520929187. The reversal of 520929089 is 980929025.

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 28976689 + 491952400 = 5383^2 + 22180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520929089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520929029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180842 + ... + 183699.

It is an arithmetic number, because the mean of its divisors is an integer number (130323765).

Almost surely, 2^520929089 is an apocalyptic number.

It is an amenable number.

520929089 is a deficient number, since it is larger than the sum of its proper divisors (365971).

520929089 is a wasteful number, since it uses less digits than its factorization.

520929089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365970.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 520929089 is about 22823.8710345112. The cubic root of 520929089 is about 804.6237913924.

The spelling of 520929089 in words is "five hundred twenty million, nine hundred twenty-nine thousand, eighty-nine".