8999641 has 16 divisors (see below), whose sum is σ = 10792960. Its totient is φ = 7341840.

The previous prime is 8999609. The next prime is 8999651. The reversal of 8999641 is 1469998.

8999641 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 8999641 - 2⁵ = 8999609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8999591 and 8999600.

It is not an unprimeable number, because it can be changed into a prime (8999651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14230 + ... + 14848.

It is an arithmetic number, because the mean of its divisors is an integer number (674560).

Almost surely, 2^8999641 is an apocalyptic number.

It is an amenable number.

8999641 is a deficient number, since it is larger than the sum of its proper divisors (1793319).

8999641 is a wasteful number, since it uses less digits than its factorization.

8999641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724.

The product of its digits is 139968, while the sum is 46.

The square root of 8999641 is about 2999.9401660700. The cubic root of 8999641 is about 208.0056165273.

The spelling of 8999641 in words is "eight million, nine hundred ninety-nine thousand, six hundred forty-one".