8999081 has 12 divisors (see below), whose sum is σ = 11138112. Its totient is φ = 7119216.

The previous prime is 8999059. The next prime is 8999087. The reversal of 8999081 is 1809998.

It is not a de Polignac number, because 8999081 - 2¹⁴ = 8982697 is a prime.

It is a super-2 number, since 2×8999081² = 161966917689122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8999087) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2621 + ... + 4986.

It is an arithmetic number, because the mean of its divisors is an integer number (928176).

Almost surely, 2^8999081 is an apocalyptic number.

It is an amenable number.

8999081 is a deficient number, since it is larger than the sum of its proper divisors (2139031).

8999081 is a wasteful number, since it uses less digits than its factorization.

8999081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7640 (or 7627 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 44.

The square root of 8999081 is about 2999.8468294231. The cubic root of 8999081 is about 208.0013020752.

The spelling of 8999081 in words is "eight million, nine hundred ninety-nine thousand, eighty-one".