9000889 has 16 divisors (see below), whose sum is σ = 10137600. Its totient is φ = 7950096.

The previous prime is 9000877. The next prime is 9000899. The reversal of 9000889 is 9880009.

It is a cyclic number.

It is not a de Polignac number, because 9000889 - 2⁹ = 9000377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9000809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18552 + ... + 19030.

It is an arithmetic number, because the mean of its divisors is an integer number (633600).

Almost surely, 2^9000889 is an apocalyptic number.

It is an amenable number.

9000889 is a deficient number, since it is larger than the sum of its proper divisors (1136711).

9000889 is a wasteful number, since it uses less digits than its factorization.

9000889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 9000889 is about 3000.1481630080. The cubic root of 9000889 is about 208.0152309483.

It can be divided in two parts, 9000 and 889, that added together give a palindrome (9889).

The spelling of 9000889 in words is "nine million, eight hundred eighty-nine", and thus it is an aban number.