2209189 has 2 divisors, whose sum is σ = 2209190. Its totient is φ = 2209188.

The previous prime is 2209177. The next prime is 2209213. The reversal of 2209189 is 9819022.

2209189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1520289 + 688900 = 1233^2 + 830^2 .

It is a cyclic number.

It is not a de Polignac number, because 2209189 - 2⁷ = 2209061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2209189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2209169) 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, 1104594 + 1104595.

It is an arithmetic number, because the mean of its divisors is an integer number (1104595).

2^2209189 is an apocalyptic number.

It is an amenable number.

2209189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2209189 is an equidigital number, since it uses as much as digits as its factorization.

2209189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 2209189 is about 1486.3340808849. The cubic root of 2209189 is about 130.2399709589.

It can be divided in two parts, 220 and 9189, that added together give a square (9409 = 97²).

The spelling of 2209189 in words is "two million, two hundred nine thousand, one hundred eighty-nine".