520883989 has 2 divisors, whose sum is σ = 520883990. Its totient is φ = 520883988.

The previous prime is 520883977. The next prime is 520884011. The reversal of 520883989 is 989388025.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 296872900 + 224011089 = 17230^2 + 14967^2 .

It is a cyclic number.

It is not a de Polignac number, because 520883989 - 2¹⁷ = 520752917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520883959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260441994 + 260441995.

It is an arithmetic number, because the mean of its divisors is an integer number (260441995).

Almost surely, 2^520883989 is an apocalyptic number.

It is an amenable number.

520883989 is a deficient number, since it is larger than the sum of its proper divisors (1).

520883989 is an equidigital number, since it uses as much as digits as its factorization.

520883989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 52.

The square root of 520883989 is about 22822.8830124505. The cubic root of 520883989 is about 804.6005703303.

The spelling of 520883989 in words is "five hundred twenty million, eight hundred eighty-three thousand, nine hundred eighty-nine".