479406509 has 2 divisors, whose sum is σ = 479406510. Its totient is φ = 479406508.

The previous prime is 479406497. The next prime is 479406517. The reversal of 479406509 is 905604974.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255904009 + 223502500 = 15997^2 + 14950^2 .

It is a cyclic number.

It is not a de Polignac number, because 479406509 - 2⁴ = 479406493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 479406509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (479406539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239703254 + 239703255.

It is an arithmetic number, because the mean of its divisors is an integer number (239703255).

Almost surely, 2^479406509 is an apocalyptic number.

It is an amenable number.

479406509 is a deficient number, since it is larger than the sum of its proper divisors (1).

479406509 is an equidigital number, since it uses as much as digits as its factorization.

479406509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 479406509 is about 21895.3535938564. The cubic root of 479406509 is about 782.6506953217.

The spelling of 479406509 in words is "four hundred seventy-nine million, four hundred six thousand, five hundred nine".