11322809 has 4 divisors (see below), whose sum is σ = 11346000. Its totient is φ = 11299620.

The previous prime is 11322797. The next prime is 11322821. The reversal of 11322809 is 90822311.

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: 90822311 = 353 ⋅257287.

It is an interprime number because it is at equal distance from previous prime (11322797) and next prime (11322821).

It is a cyclic number.

It is not a de Polignac number, because 11322809 - 2²⁰ = 10274233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11322859) 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, 10847 + ... + 11844.

It is an arithmetic number, because the mean of its divisors is an integer number (2836500).

Almost surely, 2^11322809 is an apocalyptic number.

It is an amenable number.

11322809 is a deficient number, since it is larger than the sum of its proper divisors (23191).

11322809 is an equidigital number, since it uses as much as digits as its factorization.

11322809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23190.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 11322809 is about 3364.9381866537. The cubic root of 11322809 is about 224.5525858003.

It can be divided in two parts, 113 and 22809, that added together give a palindrome (22922).

The spelling of 11322809 in words is "eleven million, three hundred twenty-two thousand, eight hundred nine".