Yes it can . . . at least by itself and by the number, 'one'.
0.0167
8.9149
71.3246
19.0455
46.5556
0.1098
19.0455
0.0024
A prime number is one that can only be divided by 1 and itself. 419 can only be divided by 1 and itself, therefore it is a prime number.
419.3651
52.375
20% of 419 = 20% * 419 = 0.2 * 419 = 83.8