4420809 has 6 divisors (see below), whose sum is σ = 6385626. Its totient is φ = 2947200.

The previous prime is 4420777. The next prime is 4420813. The reversal of 4420809 is 9080244.

It can be written as a sum of positive squares in only one way, i.e., 4112784 + 308025 = 2028^2 + 555^2 .

It is not a de Polignac number, because 4420809 - 2⁵ = 4420777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4420849) 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 5 ways as a sum of consecutive naturals, for example, 245592 + ... + 245609.

It is an arithmetic number, because the mean of its divisors is an integer number (1064271).

Almost surely, 2^4420809 is an apocalyptic number.

It is an amenable number.

4420809 is a deficient number, since it is larger than the sum of its proper divisors (1964817).

4420809 is a wasteful number, since it uses less digits than its factorization.

4420809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491207 (or 491204 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 4420809 is about 2102.5719963892. The cubic root of 4420809 is about 164.1221700231.

The spelling of 4420809 in words is "four million, four hundred twenty thousand, eight hundred nine".