8999234816 has 144 divisors (see below), whose sum is σ = 21201022080. Its totient is φ = 3758530560.

The previous prime is 8999234809. The next prime is 8999234843. The reversal of 8999234816 is 6184329998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10725725 + ... + 10726563.

It is an arithmetic number, because the mean of its divisors is an integer number (147229320).

Almost surely, 2^8999234816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8999234816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10600511040).

8999234816 is an abundant number, since it is smaller than the sum of its proper divisors (12201787264).

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

8999234816 is a wasteful number, since it uses less digits than its factorization.

8999234816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172 (or 1158 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 59.

The square root of 8999234816 is about 94864.2968455467. The cubic root of 8999234816 is about 2080.0248714975.

The spelling of 8999234816 in words is "eight billion, nine hundred ninety-nine million, two hundred thirty-four thousand, eight hundred sixteen".