479721017 has 2 divisors, whose sum is σ = 479721018. Its totient is φ = 479721016.

The previous prime is 479721007. The next prime is 479721031. The reversal of 479721017 is 710127974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 417957136 + 61763881 = 20444^2 + 7859^2 .

It is a cyclic number.

It is not a de Polignac number, because 479721017 - 2⁶ = 479720953 is a prime.

It is not a weakly prime, because it can be changed into another prime (479721007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239860508 + 239860509.

It is an arithmetic number, because the mean of its divisors is an integer number (239860509).

Almost surely, 2^479721017 is an apocalyptic number.

It is an amenable number.

479721017 is a deficient number, since it is larger than the sum of its proper divisors (1).

479721017 is an equidigital number, since it uses as much as digits as its factorization.

479721017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24696, while the sum is 38.

The square root of 479721017 is about 21902.5344880450. The cubic root of 479721017 is about 782.8218069581.

The spelling of 479721017 in words is "four hundred seventy-nine million, seven hundred twenty-one thousand, seventeen".