Any number that is not a whole number, a negative whole number, or 0 is said to be non-integer. Any number that is not a member of the integer set and is represented by the expression… -3, -2, -1, 0, 1, 2, 3,…

Non-integers include things like fractions, decimals, and fictitious numbers. Pi, for instance, has a value of 3.14, which is not an integer. The mathematical constant e, also referred to as Euler’s constant, has a value of around 2.71 and is another non-integer. Another non-integer mathematical constant is the Golden Ratio, which has a value of 1.61. 1/4, or 0.25 in fraction form, is also a non-integer.