4440809 has 8 divisors (see below), whose sum is σ = 4546560. Its totient is φ = 4336416.

The previous prime is 4440803. The next prime is 4440823. The reversal of 4440809 is 9080444.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4440809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4440803) 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 7 ways as a sum of consecutive naturals, for example, 9032 + ... + 9510.

It is an arithmetic number, because the mean of its divisors is an integer number (568320).

Almost surely, 2^4440809 is an apocalyptic number.

It is an amenable number.

4440809 is a deficient number, since it is larger than the sum of its proper divisors (105751).

4440809 is a wasteful number, since it uses less digits than its factorization.

4440809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679.

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

The square root of 4440809 is about 2107.3227090315. The cubic root of 4440809 is about 164.3692971752.

The spelling of 4440809 in words is "four million, four hundred forty thousand, eight hundred nine".