479932009 has 2 divisors, whose sum is σ = 479932010. Its totient is φ = 479932008.

The previous prime is 479931989. The next prime is 479932021. The reversal of 479932009 is 900239974.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251317609 + 228614400 = 15853^2 + 15120^2 .

It is a cyclic number.

It is not a de Polignac number, because 479932009 - 2²⁵ = 446377577 is a prime.

It is not a weakly prime, because it can be changed into another prime (479932309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239966004 + 239966005.

It is an arithmetic number, because the mean of its divisors is an integer number (239966005).

Almost surely, 2^479932009 is an apocalyptic number.

It is an amenable number.

479932009 is a deficient number, since it is larger than the sum of its proper divisors (1).

479932009 is an equidigital number, since it uses as much as digits as its factorization.

479932009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 479932009 is about 21907.3505700712. The cubic root of 479932009 is about 782.9365576318.

The spelling of 479932009 in words is "four hundred seventy-nine million, nine hundred thirty-two thousand, nine".