9089909 has 4 divisors (see below), whose sum is σ = 9096780. Its totient is φ = 9083040.

The previous prime is 9089903. The next prime is 9089921. The reversal of 9089909 is 9099809.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5189284 + 3900625 = 2278^2 + 1975^2 .

It is a cyclic number.

It is not a de Polignac number, because 9089909 - 2⁴ = 9089893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9089909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9089903) 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 3 ways as a sum of consecutive naturals, for example, 752 + ... + 4329.

It is an arithmetic number, because the mean of its divisors is an integer number (2274195).

Almost surely, 2^9089909 is an apocalyptic number.

It is an amenable number.

9089909 is a deficient number, since it is larger than the sum of its proper divisors (6871).

9089909 is a wasteful number, since it uses less digits than its factorization.

9089909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6870.

The product of its (nonzero) digits is 52488, while the sum is 44.

The square root of 9089909 is about 3014.9475949011. The cubic root of 9089909 is about 208.6987486979.

The spelling of 9089909 in words is "nine million, eighty-nine thousand, nine hundred nine".