2107209 has 16 divisors (see below), whose sum is σ = 3072384. Its totient is φ = 1276800.

The previous prime is 2107207. The next prime is 2107223. The reversal of 2107209 is 9027012.

It is a happy number.

It is not a de Polignac number, because 2107209 - 2¹ = 2107207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2107207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2389 + ... + 3149.

It is an arithmetic number, because the mean of its divisors is an integer number (192024).

2^2107209 is an apocalyptic number.

It is an amenable number.

2107209 is a deficient number, since it is larger than the sum of its proper divisors (965175).

2107209 is a wasteful number, since it uses less digits than its factorization.

2107209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 2107209 is about 1451.6228849119. The cubic root of 2107209 is about 128.2042839845.

The spelling of 2107209 in words is "two million, one hundred seven thousand, two hundred nine".