479157509 has 2 divisors, whose sum is σ = 479157510. Its totient is φ = 479157508.

The previous prime is 479157493. The next prime is 479157559. The reversal of 479157509 is 905751974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 336832609 + 142324900 = 18353^2 + 11930^2 .

It is a cyclic number.

It is not a de Polignac number, because 479157509 - 2⁴ = 479157493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (479157559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239578754 + 239578755.

It is an arithmetic number, because the mean of its divisors is an integer number (239578755).

Almost surely, 2^479157509 is an apocalyptic number.

It is an amenable number.

479157509 is a deficient number, since it is larger than the sum of its proper divisors (1).

479157509 is an equidigital number, since it uses as much as digits as its factorization.

479157509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 396900, while the sum is 47.

The square root of 479157509 is about 21889.6667174263. Note that the first 3 decimals coincide. The cubic root of 479157509 is about 782.5151709675.

The spelling of 479157509 in words is "four hundred seventy-nine million, one hundred fifty-seven thousand, five hundred nine".