479538317849 has 4 divisors (see below), whose sum is σ = 492498812964. Its totient is φ = 466577822736.

The previous prime is 479538317809. The next prime is 479538317861. The reversal of 479538317849 is 948713835974.

It is a happy number.

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 204626855449 + 274911462400 = 452357^2 + 524320^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-479538317849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (479538317809) 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, 6480247502 + ... + 6480247575.

It is an arithmetic number, because the mean of its divisors is an integer number (123124703241).

Almost surely, 2^479538317849 is an apocalyptic number.

It is an amenable number.

479538317849 is a deficient number, since it is larger than the sum of its proper divisors (12960495115).

479538317849 is a wasteful number, since it uses less digits than its factorization.

479538317849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12960495114.

The product of its digits is 182891520, while the sum is 68.

The spelling of 479538317849 in words is "four hundred seventy-nine billion, five hundred thirty-eight million, three hundred seventeen thousand, eight hundred forty-nine".