8999000009999 has 8 divisors (see below), whose sum is σ = 9003004078848. Its totient is φ = 8994996644760.

The previous prime is 8999000009981. The next prime is 8999000010031. The reversal of 8999000009999 is 9999000009998.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8999000009999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8999000059999) 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, 26288954 + ... + 26629064.

It is an arithmetic number, because the mean of its divisors is an integer number (1125375509856).

Almost surely, 2^{8999000009999} is an apocalyptic number.

8999000009999 is a deficient number, since it is larger than the sum of its proper divisors (4004068849).

8999000009999 is a wasteful number, since it uses less digits than its factorization.

8999000009999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351805.

The product of its (nonzero) digits is 38263752, while the sum is 71.

Subtracting 8999000009999 from its reverse (9999000009998), we obtain a palindrome (999999999999).

The spelling of 8999000009999 in words is "eight trillion, nine hundred ninety-nine billion, nine thousand, nine hundred ninety-nine".