8664473539 has 2 divisors, whose sum is σ = 8664473540. Its totient is φ = 8664473538.

The previous prime is 8664473513. The next prime is 8664473563. The reversal of 8664473539 is 9353744668.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8664473539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8664473539.

It is not a weakly prime, because it can be changed into another prime (8664473639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4332236769 + 4332236770.

It is an arithmetic number, because the mean of its divisors is an integer number (4332236770).

Almost surely, 2^8664473539 is an apocalyptic number.

8664473539 is a deficient number, since it is larger than the sum of its proper divisors (1).

8664473539 is an equidigital number, since it uses as much as digits as its factorization.

8664473539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13063680, while the sum is 55.

The square root of 8664473539 is about 93083.1538947838. The cubic root of 8664473539 is about 2053.9067707947.

The spelling of 8664473539 in words is "eight billion, six hundred sixty-four million, four hundred seventy-three thousand, five hundred thirty-nine".