2189206 has 4 divisors (see below), whose sum is σ = 3283812. Its totient is φ = 1094602.

The previous prime is 2189183. The next prime is 2189207. The reversal of 2189206 is 6029812.

It is a happy number.

2189206 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.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2189207) 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, 547300 + ... + 547303.

It is an arithmetic number, because the mean of its divisors is an integer number (820953).

2^2189206 is an apocalyptic number.

2189206 is a deficient number, since it is larger than the sum of its proper divisors (1094606).

2189206 is a wasteful number, since it uses less digits than its factorization.

2189206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094605.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 2189206 is about 1479.5965666356. The cubic root of 2189206 is about 129.8460900438.

Subtracting 2189206 from its reverse (6029812), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 2189206 in words is "two million, one hundred eighty-nine thousand, two hundred six".