479509 has 2 divisors, whose sum is σ = 479510. Its totient is φ = 479508.

The previous prime is 479497. The next prime is 479513. The reversal of 479509 is 905974.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272484 + 207025 = 522^2 + 455^2 .

It is a cyclic number.

It is not a de Polignac number, because 479509 - 2¹¹ = 477461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (479569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239754 + 239755.

It is an arithmetic number, because the mean of its divisors is an integer number (239755).

2⁴⁷⁹⁵⁰⁹ is an apocalyptic number.

It is an amenable number.

479509 is a deficient number, since it is larger than the sum of its proper divisors (1).

479509 is an equidigital number, since it uses as much as digits as its factorization.

479509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 479509 is about 692.4658836362. The cubic root of 479509 is about 78.2706464928.

The spelling of 479509 in words is "four hundred seventy-nine thousand, five hundred nine".