2209871 has 8 divisors (see below), whose sum is σ = 2350080. Its totient is φ = 2072088.

The previous prime is 2209853. The next prime is 2209891. The reversal of 2209871 is 1789022.

It is a happy number.

2209871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2209871 - 2¹⁰ = 2208847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2209811) 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 7 ways as a sum of consecutive naturals, for example, 1490 + ... + 2576.

It is an arithmetic number, because the mean of its divisors is an integer number (293760).

2^2209871 is an apocalyptic number.

2209871 is a deficient number, since it is larger than the sum of its proper divisors (140209).

2209871 is a wasteful number, since it uses less digits than its factorization.

2209871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 2209871 is about 1486.5634867035. The cubic root of 2209871 is about 130.2533717320.

The spelling of 2209871 in words is "two million, two hundred nine thousand, eight hundred seventy-one".