What two numbers add up to 9009?

There are infinite combinations of two numbers that add up to 9009. Here are some examples using negative numbers:

-1 + 9010 = 9009
-2 + 9011 = 9009
-3 + 9012 = 9009
...

Here are some examples using two fractions that will add up to 9009:

9009/2 + 9009/2 = 9009
18018/3 + 9009/3 = 9009
27027/4 + 9009/4 = 9009
...

And here are some examples using two decimal numbers that will add up to 9009:

1.25 + 9007.75 = 9009
2.50 + 9006.5 = 9009
3.75 + 9005.25 = 9009
...

As you can see from the lists above, it can go on forever. However, when answering "What two numbers add up to 9009?", it may be more interesting to set some criteria to limit the result. We will set the follow criteria:

1) Only positive whole numbers can add up to 9009. (0 is not a positive or negative number and should not be included.)

2) Since a+b=29 is the same as b+a=29, we should only list it once.

Now, the answer to "What two numbers add up to 9009?" has 4504 answers:

1 + 9008 = 9009
2 + 9007 = 9009
3 + 9006 = 9009
.
.
4502 + 4507 = 9009
4503 + 4506 = 9009
4504 + 4505 = 9009

We have truncated the list above due to space, but you may be interested to know that we calculated the number of answers by dividing 9009 by 2 and then rounded down to the nearest whole number if necessary.

Numbers That Add Up To Calculator
Submit another "What two numbers add up to x?" problem here.

What two numbers add up to 9010?
Here is the next problem on our list that we answered and explained in a similar fashion.