11099209 has 16 divisors (see below), whose sum is σ = 12648960. Its totient is φ = 9728400.

The previous prime is 11099197. The next prime is 11099243. The reversal of 11099209 is 90299011.

It is not a de Polignac number, because 11099209 - 2¹¹ = 11097161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11099269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41127 + ... + 41395.

It is an arithmetic number, because the mean of its divisors is an integer number (790560).

Almost surely, 2^11099209 is an apocalyptic number.

It is an amenable number.

11099209 is a deficient number, since it is larger than the sum of its proper divisors (1549751).

11099209 is an equidigital number, since it uses as much as digits as its factorization.

11099209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 11099209 is about 3331.5475383071. The cubic root of 11099209 is about 223.0646115740.

The spelling of 11099209 in words is "eleven million, ninety-nine thousand, two hundred nine".