479018509 has 2 divisors, whose sum is σ = 479018510. Its totient is φ = 479018508.

The previous prime is 479018497. The next prime is 479018513. The reversal of 479018509 is 905810974.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 269058409 + 209960100 = 16403^2 + 14490^2 .

It is a cyclic number.

It is not a de Polignac number, because 479018509 - 2¹³ = 479010317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (479018569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239509254 + 239509255.

It is an arithmetic number, because the mean of its divisors is an integer number (239509255).

Almost surely, 2^479018509 is an apocalyptic number.

It is an amenable number.

479018509 is a deficient number, since it is larger than the sum of its proper divisors (1).

479018509 is an equidigital number, since it uses as much as digits as its factorization.

479018509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 479018509 is about 21886.4914730525. The cubic root of 479018509 is about 782.4394963886.

The spelling of 479018509 in words is "four hundred seventy-nine million, eighteen thousand, five hundred nine".