9090889 has 4 divisors (see below), whose sum is σ = 9312660. Its totient is φ = 8869120.

The previous prime is 9090871. The next prime is 9090901. The reversal of 9090889 is 9880909.

9090889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2755600 + 6335289 = 1660^2 + 2517^2 .

It is not a de Polignac number, because 9090889 - 2⁵ = 9090857 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9090859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110824 + ... + 110905.

It is an arithmetic number, because the mean of its divisors is an integer number (2328165).

Almost surely, 2^9090889 is an apocalyptic number.

It is an amenable number.

9090889 is a deficient number, since it is larger than the sum of its proper divisors (221771).

9090889 is a wasteful number, since it uses less digits than its factorization.

9090889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221770.

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 9090889 is about 3015.1101140754. The cubic root of 9090889 is about 208.7062484952.

The spelling of 9090889 in words is "nine million, ninety thousand, eight hundred eighty-nine".