14 (number)

14 (fourteen /fɔərˈtiːn/) is the natural number following 13 and preceding 15.

In speech, the numbers 14 and 40 are often confused. When carefully enunciated, they differ in which syllable is stressed: 14 ⁱ/fɔərˈtiːn/ vs 40 /ˈfɔːrti/. In relation to the word "four" (4), 14 is spelled "fourteen".

In mathematics

Fourteen is a composite number, its divisors being 1, 2, 7 and 14.

14 is the 3rd discrete semiprime (2 × 7) and the 3rd member of the (2·q) discrete semiprime family. The number following 14—15—is itself a discrete semiprime and this is the first such pair of discrete semiprimes. The next example is the pair commencing 21.

The aliquot sum σ(n) of 14 is 10, also a discrete semiprime and this is again the first example of a discrete semiprime having an aliquot sum in the same form. 14 has an aliquot sequence of 6 members (14,10,8,7,1,0) 14 is the third composite number in the 7-aliquot tree.

Fourteen is itself the aliquot sum of two numbers; the discrete semiprime 22, and the square number 169.