479817649 has 2 divisors, whose sum is σ = 479817650. Its totient is φ = 479817648.

The previous prime is 479817641. The next prime is 479817661. The reversal of 479817649 is 946718974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 275327649 + 204490000 = 16593^2 + 14300^2 .

It is a cyclic number.

It is not a de Polignac number, because 479817649 - 2³ = 479817641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 479817649.

It is not a weakly prime, because it can be changed into another prime (479817641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239908824 + 239908825.

It is an arithmetic number, because the mean of its divisors is an integer number (239908825).

Almost surely, 2^479817649 is an apocalyptic number.

It is an amenable number.

479817649 is a deficient number, since it is larger than the sum of its proper divisors (1).

479817649 is an equidigital number, since it uses as much as digits as its factorization.

479817649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3048192, while the sum is 55.

The square root of 479817649 is about 21904.7403317182. The cubic root of 479817649 is about 782.8743656714.

The spelling of 479817649 in words is "four hundred seventy-nine million, eight hundred seventeen thousand, six hundred forty-nine".