11136209 has 12 divisors (see below), whose sum is σ = 13331136. Its totient is φ = 9095592.

The previous prime is 11136187. The next prime is 11136211. The reversal of 11136209 is 90263111.

It is a happy number.

It is not a de Polignac number, because 11136209 - 2⁸ = 11135953 is a prime.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11136259) 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 11 ways as a sum of consecutive naturals, for example, 42212 + ... + 42474.

It is an arithmetic number, because the mean of its divisors is an integer number (1110928).

Almost surely, 2^11136209 is an apocalyptic number.

It is an amenable number.

11136209 is a deficient number, since it is larger than the sum of its proper divisors (2194927).

11136209 is an frugal number, since it uses more digits than its factorization.

11136209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 11136209 is about 3337.0958931382. The cubic root of 11136209 is about 223.3122038870.

The spelling of 11136209 in words is "eleven million, one hundred thirty-six thousand, two hundred nine".