9085509 has 6 divisors (see below), whose sum is σ = 13123526. Its totient is φ = 6057000.

The previous prime is 9085499. The next prime is 9085543. The reversal of 9085509 is 9055809.

It can be written as a sum of positive squares in only one way, i.e., 8105409 + 980100 = 2847^2 + 990^2 .

It is not a de Polignac number, because 9085509 - 2⁴ = 9085493 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9085309) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 504742 + ... + 504759.

Almost surely, 2^9085509 is an apocalyptic number.

It is an amenable number.

9085509 is a deficient number, since it is larger than the sum of its proper divisors (4038017).

9085509 is a wasteful number, since it uses less digits than its factorization.

9085509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009507 (or 1009504 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The square root of 9085509 is about 3014.2178089846. The cubic root of 9085509 is about 208.6650694939.

The spelling of 9085509 in words is "nine million, eighty-five thousand, five hundred nine".