4406009 has 4 divisors (see below), whose sum is σ = 4665204. Its totient is φ = 4146816.

The previous prime is 4405991. The next prime is 4406021. The reversal of 4406009 is 9006044.

4406009 = T₄₉₂ + T₄₉₃ + ... + T₅₂₅.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2650384 + 1755625 = 1628^2 + 1325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4406009 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 (4406069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129572 + ... + 129605.

It is an arithmetic number, because the mean of its divisors is an integer number (1166301).

Almost surely, 2^4406009 is an apocalyptic number.

It is an amenable number.

4406009 is a deficient number, since it is larger than the sum of its proper divisors (259195).

4406009 is a wasteful number, since it uses less digits than its factorization.

4406009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259194.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 4406009 is about 2099.0495468188. The cubic root of 4406009 is about 163.9388156655.

The spelling of 4406009 in words is "four million, four hundred six thousand, nine".