2144209 has 2 divisors, whose sum is σ = 2144210. Its totient is φ = 2144208.

The previous prime is 2144189. The next prime is 2144213. The reversal of 2144209 is 9024412.

2144209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1830609 + 313600 = 1353^2 + 560^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144209 - 2⁷ = 2144081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2144209.

It is not a weakly prime, because it can be changed into another prime (2144249) 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 as a sum of consecutive naturals, namely, 1072104 + 1072105.

It is an arithmetic number, because the mean of its divisors is an integer number (1072105).

2^2144209 is an apocalyptic number.

It is an amenable number.

2144209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144209 is an equidigital number, since it uses as much as digits as its factorization.

2144209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2144209 is about 1464.3117837401. The cubic root of 2144209 is about 128.9503043560.

The spelling of 2144209 in words is "two million, one hundred forty-four thousand, two hundred nine".