8559447899 has 4 divisors (see below), whose sum is σ = 8602460400. Its totient is φ = 8516435400.

The previous prime is 8559447881. The next prime is 8559447931. The reversal of 8559447899 is 9987449558.

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

It is a cyclic number.

It is not a de Polignac number, because 8559447899 - 2²⁰ = 8558399323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8559447859) 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 in 3 ways as a sum of consecutive naturals, for example, 21505952 + ... + 21506349.

It is an arithmetic number, because the mean of its divisors is an integer number (2150615100).

Almost surely, 2^8559447899 is an apocalyptic number.

8559447899 is a deficient number, since it is larger than the sum of its proper divisors (43012501).

8559447899 is a wasteful number, since it uses less digits than its factorization.

8559447899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43012500.

The product of its digits is 130636800, while the sum is 68.

The square root of 8559447899 is about 92517.2843256869. The cubic root of 8559447899 is about 2045.5742633151.

The spelling of 8559447899 in words is "eight billion, five hundred fifty-nine million, four hundred forty-seven thousand, eight hundred ninety-nine".