479705561 has 2 divisors, whose sum is σ = 479705562. Its totient is φ = 479705560.

The previous prime is 479705519. The next prime is 479705581. The reversal of 479705561 is 165507974.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 415385161 + 64320400 = 20381^2 + 8020^2 .

It is a cyclic number.

It is not a de Polignac number, because 479705561 - 2¹⁸ = 479443417 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (479705581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239852780 + 239852781.

It is an arithmetic number, because the mean of its divisors is an integer number (239852781).

Almost surely, 2^479705561 is an apocalyptic number.

It is an amenable number.

479705561 is a deficient number, since it is larger than the sum of its proper divisors (1).

479705561 is an equidigital number, since it uses as much as digits as its factorization.

479705561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 264600, while the sum is 44.

The square root of 479705561 is about 21902.1816493243. The cubic root of 479705561 is about 782.8133996941.

The spelling of 479705561 in words is "four hundred seventy-nine million, seven hundred five thousand, five hundred sixty-one".