4044809 has 4 divisors (see below), whose sum is σ = 4049220. Its totient is φ = 4040400.

The previous prime is 4044797. The next prime is 4044811. The reversal of 4044809 is 9084404.

It is a happy number.

4044809 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 brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 222784 + 3822025 = 472^2 + 1955^2 .

It is a cyclic number.

It is not a de Polignac number, because 4044809 - 2⁸ = 4044553 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 (4044869) 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 3 ways as a sum of consecutive naturals, for example, 254 + ... + 2855.

It is an arithmetic number, because the mean of its divisors is an integer number (1012305).

Almost surely, 2^4044809 is an apocalyptic number.

It is an amenable number.

4044809 is a deficient number, since it is larger than the sum of its proper divisors (4411).

4044809 is a wasteful number, since it uses less digits than its factorization.

4044809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4410.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 4044809 is about 2011.1710518999. The cubic root of 4044809 is about 159.3306542775.

The spelling of 4044809 in words is "four million, forty-four thousand, eight hundred nine".