8489047517 has 2 divisors, whose sum is σ = 8489047518. Its totient is φ = 8489047516.

The previous prime is 8489047513. The next prime is 8489047543. The reversal of 8489047517 is 7157409848.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4867294756 + 3621752761 = 69766^2 + 60181^2 .

It is a cyclic number.

It is not a de Polignac number, because 8489047517 - 2² = 8489047513 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8489047513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4244523758 + 4244523759.

It is an arithmetic number, because the mean of its divisors is an integer number (4244523759).

Almost surely, 2^8489047517 is an apocalyptic number.

It is an amenable number.

8489047517 is a deficient number, since it is larger than the sum of its proper divisors (1).

8489047517 is an equidigital number, since it uses as much as digits as its factorization.

8489047517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The square root of 8489047517 is about 92136.0272477601. The cubic root of 8489047517 is about 2039.9506201202.

The spelling of 8489047517 in words is "eight billion, four hundred eighty-nine million, forty-seven thousand, five hundred seventeen".