11209589 has 4 divisors (see below), whose sum is σ = 11220480. Its totient is φ = 11198700.

The previous prime is 11209537. The next prime is 11209591. The reversal of 11209589 is 98590211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11209589 - 2¹⁶ = 11144053 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 (11209519) 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, 3719 + ... + 6020.

It is an arithmetic number, because the mean of its divisors is an integer number (2805120).

Almost surely, 2^11209589 is an apocalyptic number.

It is an amenable number.

11209589 is a deficient number, since it is larger than the sum of its proper divisors (10891).

11209589 is an equidigital number, since it uses as much as digits as its factorization.

11209589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10890.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 11209589 is about 3348.0724305188. The cubic root of 11209589 is about 223.8016220374.

The spelling of 11209589 in words is "eleven million, two hundred nine thousand, five hundred eighty-nine".