4012209 has 12 divisors (see below), whose sum is σ = 5861700. Its totient is φ = 2644224.

The previous prime is 4012207. The next prime is 4012213. The reversal of 4012209 is 9022104.

It can be written as a sum of positive squares in 2 ways, for example, as 1299600 + 2712609 = 1140^2 + 1647^2 .

It is not a de Polignac number, because 4012209 - 2¹ = 4012207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4012191 and 4012200.

It is not an unprimeable number, because it can be changed into a prime (4012207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1704 + ... + 3305.

It is an arithmetic number, because the mean of its divisors is an integer number (488475).

Almost surely, 2^4012209 is an apocalyptic number.

It is an amenable number.

4012209 is a deficient number, since it is larger than the sum of its proper divisors (1849491).

4012209 is a wasteful number, since it uses less digits than its factorization.

4012209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5104 (or 5101 counting only the distinct ones).

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

The square root of 4012209 is about 2003.0499244902. The cubic root of 4012209 is about 158.9014459859.

The spelling of 4012209 in words is "four million, twelve thousand, two hundred nine".