11144809 has 16 divisors (see below), whose sum is σ = 12821760. Its totient is φ = 9596160.

The previous prime is 11144801. The next prime is 11144821. The reversal of 11144809 is 90844111.

It is not a de Polignac number, because 11144809 - 2³ = 11144801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11144801) 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, 46512 + ... + 46750.

It is an arithmetic number, because the mean of its divisors is an integer number (801360).

Almost surely, 2^11144809 is an apocalyptic number.

It is an amenable number.

11144809 is a deficient number, since it is larger than the sum of its proper divisors (1676951).

11144809 is a wasteful number, since it uses less digits than its factorization.

11144809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 11144809 is about 3338.3841899937. The cubic root of 11144809 is about 223.3696737973.

The spelling of 11144809 in words is "eleven million, one hundred forty-four thousand, eight hundred nine".