2208109 has 4 divisors (see below), whose sum is σ = 2211616. Its totient is φ = 2204604.

The previous prime is 2208103. The next prime is 2208127. The reversal of 2208109 is 9018022.

2208109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2208109 - 2⁵ = 2208077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2208109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2208103) 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 3 ways as a sum of consecutive naturals, for example, 519 + ... + 2164.

It is an arithmetic number, because the mean of its divisors is an integer number (552904).

2^2208109 is an apocalyptic number.

It is an amenable number.

2208109 is a deficient number, since it is larger than the sum of its proper divisors (3507).

2208109 is an equidigital number, since it uses as much as digits as its factorization.

2208109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3506.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 2208109 is about 1485.9707264950. The cubic root of 2208109 is about 130.2187441503.

The spelling of 2208109 in words is "two million, two hundred eight thousand, one hundred nine".