520359839 has 8 divisors (see below), whose sum is σ = 524700288. Its totient is φ = 516027520.

The previous prime is 520359803. The next prime is 520359857. The reversal of 520359839 is 938953025.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520359839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 520359839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520359739) 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, 234674 + ... + 236880.

It is an arithmetic number, because the mean of its divisors is an integer number (65587536).

Almost surely, 2^520359839 is an apocalyptic number.

520359839 is a deficient number, since it is larger than the sum of its proper divisors (4340449).

520359839 is a wasteful number, since it uses less digits than its factorization.

520359839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4065.

The product of its (nonzero) digits is 291600, while the sum is 44.

The square root of 520359839 is about 22811.3971295052. The cubic root of 520359839 is about 804.3305979144.

The spelling of 520359839 in words is "five hundred twenty million, three hundred fifty-nine thousand, eight hundred thirty-nine".