479928364217 has 4 divisors (see below), whose sum is σ = 483149360100. Its totient is φ = 476707368336.

The previous prime is 479928364189. The next prime is 479928364243. The reversal of 479928364217 is 712463829974.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 158579964841 + 321348399376 = 398221^2 + 566876^2 .

It is a cyclic number.

It is not a de Polignac number, because 479928364217 - 2²⁶ = 479861255353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 479928364217.

It is not an unprimeable number, because it can be changed into a prime (479928364117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1610497718 + ... + 1610498015.

It is an arithmetic number, because the mean of its divisors is an integer number (120787340025).

Almost surely, 2^479928364217 is an apocalyptic number.

It is an amenable number.

479928364217 is a deficient number, since it is larger than the sum of its proper divisors (3220995883).

479928364217 is a wasteful number, since it uses less digits than its factorization.

479928364217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220995882.

The product of its digits is 36578304, while the sum is 62.

The spelling of 479928364217 in words is "four hundred seventy-nine billion, nine hundred twenty-eight million, three hundred sixty-four thousand, two hundred seventeen".