8999999999892 has 72 divisors (see below), whose sum is σ = 24818516940672. Its totient is φ = 2727235900800.

The previous prime is 8999999999891. The next prime is 8999999999911. The reversal of 8999999999892 is 2989999999998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8999999999891) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49348392 + ... + 49530432.

It is an arithmetic number, because the mean of its divisors is an integer number (344701624176).

Almost surely, 2^{8999999999892} is an apocalyptic number.

It is an amenable number.

8999999999892 is an abundant number, since it is smaller than the sum of its proper divisors (15818516940780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8999999999892 is a wasteful number, since it uses less digits than its factorization.

8999999999892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306909 (or 306904 counting only the distinct ones).

The product of its digits is 446308403328, while the sum is 108.

Adding to 8999999999892 its sum of digits (108), we get a square (9000000000000 = 3000000²).

The spelling of 8999999999892 in words is "eight trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, eight hundred ninety-two".