11804009 has 4 divisors (see below), whose sum is σ = 13490304. Its totient is φ = 10117716.

The previous prime is 11803969. The next prime is 11804021. The reversal of 11804009 is 90040811.

11804009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is not a de Polignac number, because 11804009 - 2¹² = 11799913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11804029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 843137 + ... + 843150.

It is an arithmetic number, because the mean of its divisors is an integer number (3372576).

Almost surely, 2^11804009 is an apocalyptic number.

It is an amenable number.

11804009 is a deficient number, since it is larger than the sum of its proper divisors (1686295).

11804009 is an equidigital number, since it uses as much as digits as its factorization.

11804009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686294.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 11804009 is about 3435.6962904192. The cubic root of 11804009 is about 227.6895911821.

The spelling of 11804009 in words is "eleven million, eight hundred four thousand, nine".