HyperMath automatically converts numbers to strings and vice versa where it is appropriate.  This is called coercion.  The following example illustrates converting numbers to a string:

      SetNumberFormat('long')  

   > print("Pi = " + PI) // Converts the value of pi to string before concatenating

   Pi = 3.1415926535898

   > print("Pi = " + 3.1415927) //Converts 3.1415927 to string

   Pi = 3.1415927

In the example above, during coercion, you do not have full control over the formatting of the conversion.  To format the number as a string, use the StrFormat()function.  For example:

   > print(StrFormat("%.3f", PI) )

   3.142

This is an explicit conversion using a function to convert the number, rather than coercion.