11209289 has 12 divisors (see below), whose sum is σ = 14043204. Its totient is φ = 8868384.

The previous prime is 11209249. The next prime is 11209291. The reversal of 11209289 is 98290211.

It is a happy number.

11209289 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 840889 + 10368400 = 917^2 + 3220^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11209289 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11209249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8162 + ... + 9435.

It is an arithmetic number, because the mean of its divisors is an integer number (1170267).

Almost surely, 2^11209289 is an apocalyptic number.

It is an amenable number.

11209289 is a deficient number, since it is larger than the sum of its proper divisors (2833915).

11209289 is a wasteful number, since it uses less digits than its factorization.

11209289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17624 (or 17617 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 11209289 is about 3348.0276283209. The cubic root of 11209289 is about 223.7996255001.

The spelling of 11209289 in words is "eleven million, two hundred nine thousand, two hundred eighty-nine".