479808997 has 2 divisors, whose sum is σ = 479808998. Its totient is φ = 479808996.

The previous prime is 479808971. The next prime is 479809009. The reversal of 479808997 is 799808974.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253637476 + 226171521 = 15926^2 + 15039^2 .

It is a cyclic number.

It is not a de Polignac number, because 479808997 - 2²⁷ = 345591269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (479808907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239904498 + 239904499.

It is an arithmetic number, because the mean of its divisors is an integer number (239904499).

Almost surely, 2^479808997 is an apocalyptic number.

It is an amenable number.

479808997 is a deficient number, since it is larger than the sum of its proper divisors (1).

479808997 is an equidigital number, since it uses as much as digits as its factorization.

479808997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9144576, while the sum is 61.

The square root of 479808997 is about 21904.5428393290. The cubic root of 479808997 is about 782.8696600854.

The spelling of 479808997 in words is "four hundred seventy-nine million, eight hundred eight thousand, nine hundred ninety-seven".