11349209 has 4 divisors (see below), whose sum is σ = 11391360. Its totient is φ = 11307060.

The previous prime is 11349203. The next prime is 11349223. The reversal of 11349209 is 90294311.

It is a happy number.

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 an emirpimes, since its reverse is a distinct semiprime: 90294311 = 157 ⋅575123.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11349209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11349203) 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, 20669 + ... + 21210.

It is an arithmetic number, because the mean of its divisors is an integer number (2847840).

Almost surely, 2^11349209 is an apocalyptic number.

It is an amenable number.

11349209 is a deficient number, since it is larger than the sum of its proper divisors (42151).

11349209 is an equidigital number, since it uses as much as digits as its factorization.

11349209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42150.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 11349209 is about 3368.8587088211. The cubic root of 11349209 is about 224.7269708810.

The spelling of 11349209 in words is "eleven million, three hundred forty-nine thousand, two hundred nine".