4442209 has 2 divisors, whose sum is σ = 4442210. Its totient is φ = 4442208.

The previous prime is 4442189. The next prime is 4442213. The reversal of 4442209 is 9022444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4422609 + 19600 = 2103^2 + 140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4442209 is a prime.

It is not a weakly prime, because it can be changed into another prime (4442279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2221104 + 2221105.

It is an arithmetic number, because the mean of its divisors is an integer number (2221105).

Almost surely, 2^4442209 is an apocalyptic number.

It is an amenable number.

4442209 is a deficient number, since it is larger than the sum of its proper divisors (1).

4442209 is an equidigital number, since it uses as much as digits as its factorization.

4442209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 4442209 is about 2107.6548578930. The cubic root of 4442209 is about 164.3865682654.

The spelling of 4442209 in words is "four million, four hundred forty-two thousand, two hundred nine".