11323809 has 12 divisors (see below), whose sum is σ = 18693376. Its totient is φ = 6470712.

The previous prime is 11323789. The next prime is 11323883. The reversal of 11323809 is 90832311.

It is not a de Polignac number, because 11323809 - 2⁵ = 11323777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11323409) 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 11 ways as a sum of consecutive naturals, for example, 89809 + ... + 89934.

Almost surely, 2^11323809 is an apocalyptic number.

It is an amenable number.

11323809 is a deficient number, since it is larger than the sum of its proper divisors (7369567).

11323809 is a wasteful number, since it uses less digits than its factorization.

11323809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179756 (or 179753 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 11323809 is about 3365.0867745127. The cubic root of 11323809 is about 224.5591962323.

The spelling of 11323809 in words is "eleven million, three hundred twenty-three thousand, eight hundred nine".