520379449 has 2 divisors, whose sum is σ = 520379450. Its totient is φ = 520379448.

The previous prime is 520379417. The next prime is 520379473. The reversal of 520379449 is 944973025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 506925225 + 13454224 = 22515^2 + 3668^2 .

It is a cyclic number.

It is not a de Polignac number, because 520379449 - 2⁵ = 520379417 is a prime.

It is not a weakly prime, because it can be changed into another prime (520379479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260189724 + 260189725.

It is an arithmetic number, because the mean of its divisors is an integer number (260189725).

Almost surely, 2^520379449 is an apocalyptic number.

It is an amenable number.

520379449 is a deficient number, since it is larger than the sum of its proper divisors (1).

520379449 is an equidigital number, since it uses as much as digits as its factorization.

520379449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 520379449 is about 22811.8269544550. The cubic root of 520379449 is about 804.3407016438.

The spelling of 520379449 in words is "five hundred twenty million, three hundred seventy-nine thousand, four hundred forty-nine".