199 (one hundred [and] ninety-nine) is the natural number following 198 and preceding 200.
In mathematics It is a prime number and the fourth part of a prime quadruplet: 191, 193, 197, 199. 199 is the smallest natural number that takes more than two iterations to compute its digital root as a repeated digit sum:
199 ↦ 1 + 9 + 9 = 19 ↦ 1 + 9 = 10 ↦ 1 + 0 = 1. {\displaystyle {\begin{aligned}199&\mapsto 1+9+9=19\\&\mapsto 1+9=10\\&\mapsto 1+0=1.\end{aligned}}}
Thus, its additive persistence is three, and it is the smallest number of persistence three.
See also All pages with titles containing 199
References