2010209 has 4 divisors (see below), whose sum is σ = 2029104. Its totient is φ = 1991316.

The previous prime is 2010191. The next prime is 2010221. The reversal of 2010209 is 9020102.

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 2010209 - 2²⁰ = 961633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2010193 and 2010202.

It is not an unprimeable number, because it can be changed into a prime (2010289) 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, 9287 + ... + 9500.

It is an arithmetic number, because the mean of its divisors is an integer number (507276).

2^2010209 is an apocalyptic number.

It is an amenable number.

2010209 is a deficient number, since it is larger than the sum of its proper divisors (18895).

2010209 is a wasteful number, since it uses less digits than its factorization.

2010209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18894.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2010209 is about 1417.8183945767. The cubic root of 2010209 is about 126.2061168270.

The spelling of 2010209 in words is "two million, ten thousand, two hundred nine".