Q: What is the negative version of the number 13,509,391?
A: -13,509,391
Negative numbers are usually written with - in front of them. They represent a number that is less than zero.
Here are more examples of negative numbers in sequence:
| 13,509,389 | 13,509,390 | 13,509,392 | 13,509,393 |
| -13,509,389 | -13,509,390 | -13,509,392 | -13,509,393 |