What is 1414?

Answer 1

1414 is apparently both a triangular number and the smallest triangular number with four digits. It is also the Decimal expansion of sqrt(2) truncated and rounded to 4 places. There are many other mathematically esoteric aspects of 1414 if you care to check them out. 1414 is the smallest number whose square contains 3 consecutive 9's.1414 is the smallest number whose square contains 3 consecutive 9's.

from http://www.celsius1414.com/mathematics