2041209 has 12 divisors (see below), whose sum is σ = 2961556. Its totient is φ = 1354752.

The previous prime is 2041201. The next prime is 2041231. The reversal of 2041209 is 9021402.

It can be written as a sum of positive squares in 2 ways, for example, as 608400 + 1432809 = 780^2 + 1197^2 .

It is not a de Polignac number, because 2041209 - 2³ = 2041201 is a prime.

2041209 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2041191 and 2041200.

It is not an unprimeable number, because it can be changed into a prime (2041201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2697 + ... + 3369.

2^2041209 is an apocalyptic number.

It is an amenable number.

2041209 is a deficient number, since it is larger than the sum of its proper divisors (920347).

2041209 is a wasteful number, since it uses less digits than its factorization.

2041209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016 (or 1013 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2041209 is about 1428.7088576753. The cubic root of 2041209 is about 126.8515636134.

The spelling of 2041209 in words is "two million, forty-one thousand, two hundred nine".