2146209 has 16 divisors (see below), whose sum is σ = 3115392. Its totient is φ = 1306368.

The previous prime is 2146201. The next prime is 2146213. The reversal of 2146209 is 9026412.

2146209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2146209 - 2³ = 2146201 is a prime.

It is a Curzon number.

2146209 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2146201) 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 15 ways as a sum of consecutive naturals, for example, 4164 + ... + 4650.

It is an arithmetic number, because the mean of its divisors is an integer number (194712).

2^2146209 is an apocalyptic number.

It is an amenable number.

2146209 is a deficient number, since it is larger than the sum of its proper divisors (969183).

2146209 is a wasteful number, since it uses less digits than its factorization.

2146209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 2146209 is about 1464.9945392390. The cubic root of 2146209 is about 128.9903844765.

The spelling of 2146209 in words is "two million, one hundred forty-six thousand, two hundred nine".