4420009 has 6 divisors (see below), whose sum is σ = 4858490. Its totient is φ = 4018080.

The previous prime is 4420001. The next prime is 4420019. The reversal of 4420009 is 9000244.

It can be written as a sum of positive squares in only one way, i.e., 4141225 + 278784 = 2035^2 + 528^2 .

It is not a de Polignac number, because 4420009 - 2³ = 4420001 is a prime.

It is a Duffinian number.

4420009 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4420001) 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, 18144 + ... + 18385.

Almost surely, 2^4420009 is an apocalyptic number.

It is an amenable number.

4420009 is a deficient number, since it is larger than the sum of its proper divisors (438481).

4420009 is a wasteful number, since it uses less digits than its factorization.

4420009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36551 (or 36540 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 4420009 is about 2102.3817445935. The cubic root of 4420009 is about 164.1122694478.

The spelling of 4420009 in words is "four million, four hundred twenty thousand, nine".