479268509 has 2 divisors, whose sum is σ = 479268510. Its totient is φ = 479268508.

The previous prime is 479268481. The next prime is 479268551. The reversal of 479268509 is 905862974.

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., 457831609 + 21436900 = 21397^2 + 4630^2 .

It is a cyclic number.

It is not a de Polignac number, because 479268509 - 2⁸ = 479268253 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (479261509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239634254 + 239634255.

It is an arithmetic number, because the mean of its divisors is an integer number (239634255).

Almost surely, 2^479268509 is an apocalyptic number.

It is an amenable number.

479268509 is a deficient number, since it is larger than the sum of its proper divisors (1).

479268509 is an equidigital number, since it uses as much as digits as its factorization.

479268509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 479268509 is about 21892.2020135024. The cubic root of 479268509 is about 782.5755912372.

The spelling of 479268509 in words is "four hundred seventy-nine million, two hundred sixty-eight thousand, five hundred nine".