Q: What is the negative version of the number 21,013,409?
A: -21,013,409
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:
| 21,013,407 | 21,013,408 | 21,013,410 | 21,013,411 |
| -21,013,407 | -21,013,408 | -21,013,410 | -21,013,411 |