520830869 has 8 divisors (see below), whose sum is σ = 590415840. Its totient is φ = 455463216.

The previous prime is 520830851. The next prime is 520830881. The reversal of 520830869 is 968038025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 520830869 - 2⁸ = 520830613 is a prime.

It is a super-2 number, since 2×520830869² = 542529588206590322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520830889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1054067 + ... + 1054560.

It is an arithmetic number, because the mean of its divisors is an integer number (73801980).

Almost surely, 2^520830869 is an apocalyptic number.

It is an amenable number.

520830869 is a deficient number, since it is larger than the sum of its proper divisors (69584971).

520830869 is a wasteful number, since it uses less digits than its factorization.

520830869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2108659.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 520830869 is about 22821.7192384798. The cubic root of 520830869 is about 804.5732182159.

The spelling of 520830869 in words is "five hundred twenty million, eight hundred thirty thousand, eight hundred sixty-nine".