8999072 has 24 divisors (see below), whose sum is σ = 18488736. Its totient is φ = 4303552.

The previous prime is 8999059. The next prime is 8999087. The reversal of 8999072 is 2709998.

It is a super-2 number, since 2×8999072² = 161966593722368, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5378 + ... + 6849.

It is an arithmetic number, because the mean of its divisors is an integer number (770364).

Almost surely, 2^8999072 is an apocalyptic number.

It is an amenable number.

8999072 is an abundant number, since it is smaller than the sum of its proper divisors (9489664).

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

8999072 is a wasteful number, since it uses less digits than its factorization.

8999072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12260 (or 12252 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 8999072 is about 2999.8453293462. The cubic root of 8999072 is about 208.0012327343.

The spelling of 8999072 in words is "eight million, nine hundred ninety-nine thousand, seventy-two".