8971647999 has 8 divisors (see below), whose sum is σ = 11963478912. Its totient is φ = 5980457880.

The previous prime is 8971647967. The next prime is 8971648009. The reversal of 8971647999 is 9997461798.

8971647999 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8971647999 - 2⁵ = 8971647967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8971647199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126517 + ... + 184254.

It is an arithmetic number, because the mean of its divisors is an integer number (1495434864).

Almost surely, 2^8971647999 is an apocalyptic number.

8971647999 is a deficient number, since it is larger than the sum of its proper divisors (2991830913).

8971647999 is a wasteful number, since it uses less digits than its factorization.

8971647999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320397.

The product of its digits is 61725888, while the sum is 69.

The square root of 8971647999 is about 94718.7837706967. The cubic root of 8971647999 is about 2077.8972832417.

The spelling of 8971647999 in words is "eight billion, nine hundred seventy-one million, six hundred forty-seven thousand, nine hundred ninety-nine".