4406809 has 4 divisors (see below), whose sum is σ = 4807440. Its totient is φ = 4006180.

The previous prime is 4406797. The next prime is 4406813. The reversal of 4406809 is 9086044.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4406809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4406819) 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, 200299 + ... + 200320.

It is an arithmetic number, because the mean of its divisors is an integer number (1201860).

Almost surely, 2^4406809 is an apocalyptic number.

It is an amenable number.

4406809 is a deficient number, since it is larger than the sum of its proper divisors (400631).

4406809 is a wasteful number, since it uses less digits than its factorization.

4406809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400630.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 4406809 is about 2099.2401006078. The cubic root of 4406809 is about 163.9487372003.

The spelling of 4406809 in words is "four million, four hundred six thousand, eight hundred nine".