8999312 has 40 divisors (see below), whose sum is σ = 20980800. Its totient is φ = 3652992.

The previous prime is 8999311. The next prime is 8999317. The reversal of 8999312 is 2139998.

It is a self number, because there is not a number n which added to its sum of digits gives 8999312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8999311) 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, 14 + ... + 4242.

It is an arithmetic number, because the mean of its divisors is an integer number (524520).

Almost surely, 2^8999312 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 8999312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10490400).

8999312 is an abundant number, since it is smaller than the sum of its proper divisors (11981488).

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

8999312 is a wasteful number, since it uses less digits than its factorization.

8999312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4263 (or 4257 counting only the distinct ones).

The product of its digits is 34992, while the sum is 41.

The square root of 8999312 is about 2999.8853311418. The cubic root of 8999312 is about 208.0030818084.

The spelling of 8999312 in words is "eight million, nine hundred ninety-nine thousand, three hundred twelve".