479986817 has 2 divisors, whose sum is σ = 479986818. Its totient is φ = 479986816.

The previous prime is 479986813. The next prime is 479986831. The reversal of 479986817 is 718689974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 479785216 + 201601 = 21904^2 + 449^2 .

It is a cyclic number.

It is not a de Polignac number, because 479986817 - 2² = 479986813 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (479986813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239993408 + 239993409.

It is an arithmetic number, because the mean of its divisors is an integer number (239993409).

Almost surely, 2^479986817 is an apocalyptic number.

It is an amenable number.

479986817 is a deficient number, since it is larger than the sum of its proper divisors (1).

479986817 is an equidigital number, since it uses as much as digits as its factorization.

479986817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 59.

The square root of 479986817 is about 21908.6014387044. The cubic root of 479986817 is about 782.9663601542.

The spelling of 479986817 in words is "four hundred seventy-nine million, nine hundred eighty-six thousand, eight hundred seventeen".