No, pi is not a whole number. In fact, pi is an irrational number, which means that it cannot be expressed as a fraction of two integers. Its decimal representation is non-terminating and non-repeating, starting with 3.14159 and continuing infinitely without repeating any pattern.
Whole numbers include all non-negative integers like 0, 1, 2, 3, and so on. Since pi has a decimal expansion that never ends and does not settle into a repeating pattern, it falls outside the category of whole numbers. Therefore, while pi plays a significant role in mathematics, especially in geometry and trigonometry, it is not whole.