520427839 has 16 divisors (see below), whose sum is σ = 541032448. Its totient is φ = 500284512.

The previous prime is 520427837. The next prime is 520427891. The reversal of 520427839 is 938724025.

It is a cyclic number.

It is not a de Polignac number, because 520427839 - 2¹ = 520427837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520427833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 857074 + ... + 857680.

It is an arithmetic number, because the mean of its divisors is an integer number (33814528).

Almost surely, 2^520427839 is an apocalyptic number.

520427839 is a deficient number, since it is larger than the sum of its proper divisors (20604609).

520427839 is a wasteful number, since it uses less digits than its factorization.

520427839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 520427839 is about 22812.8875638311. The cubic root of 520427839 is about 804.3656327078.

The spelling of 520427839 in words is "five hundred twenty million, four hundred twenty-seven thousand, eight hundred thirty-nine".