520761839 has 12 divisors (see below), whose sum is σ = 582098112. Its totient is φ = 465192000.

The previous prime is 520761821. The next prime is 520761847. The reversal of 520761839 is 938167025.

It is not a de Polignac number, because 520761839 - 2⁸ = 520761583 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 520761796 and 520761805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520761809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44462 + ... + 54939.

It is an arithmetic number, because the mean of its divisors is an integer number (48508176).

Almost surely, 2^520761839 is an apocalyptic number.

520761839 is a deficient number, since it is larger than the sum of its proper divisors (61336273).

520761839 is a wasteful number, since it uses less digits than its factorization.

520761839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99458 (or 99445 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 520761839 is about 22820.2068132609. The cubic root of 520761839 is about 804.5376710761.

The spelling of 520761839 in words is "five hundred twenty million, seven hundred sixty-one thousand, eight hundred thirty-nine".