This is in the spirit of the What is a Word/Phrase™ series started by JLee with Number version puzzles.
If a number conforms to a special rule, I call it a Hope & Love Number™.
Use the following examples below to find the rule.
$$ % set Title text. (spaces around the text ARE important; do not remove.) % increase Pad value only if your entries are longer than the title bar. % \def\Pad{\P{0.0}} \def\Title{\textbf{ Hope & Love }} % \def\S#1#2{\Space{#1}{20px}{#2px}}\def\P#1{\V{#1em}}\def\V#1{\S{#1}{9}} \def\T{\Title\textbf{Numbers}^{\;\!™}\Pad}\def\NT{\Pad\textbf{Not}\T\ }\displaystyle \smash{\lower{29px}\bbox[yellow]{\phantom{\rlap{rubio.2019.05.15}\S{6px}{0} \begin{array}{cc}\Pad\T&\NT\\\end{array}}}}\atop\def\V#1{\S{#1}{5}} \begin{array}{|c|c|}\hline\Pad\T&\NT\\\hline % \text{ 27 }&\text{ 26 }\\ \hline \text{ 39 }&\text{ 38 }\\ \hline \text{ 81 }&\text{ 80 }\\ \hline \text{ 199 }&\text{ 198 }\\ \hline \text{ 230 }&\text{ 229 }\\ \hline \text{ 596 }&\text{ 595 }\\ \hline \text{ 954 }&\text{ 953 }\\ \hline \text{ 1,490 }&\text{ 1,489 }\\ \hline \text{ 1,705 }&\text{ 1,704 }\\ \hline \text{ 2,509 }&\text{ 2,508 }\\ \hline \text{ 3,002 }&\text{ 3,001 }\\ \hline \text{ 3,900 }&\text{ 3,899 }\\ \hline \end{array}$$
And, if you want to analyze, here is a CSV version:
Hope & Love Numbers™,Not Hope & Love Numbers™
27,26
39,38
81,80
199,198
230,229
596,595
954,953
1490,1489
1705,1704
2509,2508
3002,3001
3900,3899