520389441 has 40 divisors (see below), whose sum is σ = 913296384. Its totient is φ = 291120480.

The previous prime is 520389439. The next prime is 520389449. The reversal of 520389441 is 144983025.

520389441 is a `hidden beast` number, since 5 + 203 + 8 + 9 + 441 = 666.

It is not a de Polignac number, because 520389441 - 2¹ = 520389439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 520389396 and 520389405.

It is not an unprimeable number, because it can be changed into a prime (520389449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10881 + ... + 34046.

Almost surely, 2^520389441 is an apocalyptic number.

It is an amenable number.

520389441 is a deficient number, since it is larger than the sum of its proper divisors (392906943).

520389441 is a wasteful number, since it uses less digits than its factorization.

520389441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44963 (or 44954 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 520389441 is about 22812.0459626049. The cubic root of 520389441 is about 804.3458497595.

The spelling of 520389441 in words is "five hundred twenty million, three hundred eighty-nine thousand, four hundred forty-one".