479072509 has 2 divisors, whose sum is σ = 479072510. Its totient is φ = 479072508.

The previous prime is 479072483. The next prime is 479072527. The reversal of 479072509 is 905270974.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 413105625 + 65966884 = 20325^2 + 8122^2 .

It is a cyclic number.

It is not a de Polignac number, because 479072509 - 2⁷ = 479072381 is a prime.

It is equal to p_25309789 and since 479072509 and 25309789 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (479072569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239536254 + 239536255.

It is an arithmetic number, because the mean of its divisors is an integer number (239536255).

Almost surely, 2^479072509 is an apocalyptic number.

It is an amenable number.

479072509 is a deficient number, since it is larger than the sum of its proper divisors (1).

479072509 is an equidigital number, since it uses as much as digits as its factorization.

479072509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 479072509 is about 21887.7250759415. The cubic root of 479072509 is about 782.4688968846.

The spelling of 479072509 in words is "four hundred seventy-nine million, seventy-two thousand, five hundred nine".