It's a novel. The story and its elements in Fahrenheit 451 are presented on a larger scale and in greater detail compared to what's usually found in a novella.
Sure is. Fahrenheit 451 is a classic. Its exploration of censorship, dystopia, and the power of books has made it an important work in the literary canon. Many readers and scholars find it to be a timeless masterpiece.
The graphic novel version by Tor Fantasy is more visual compared to the original. It uses pictures to show the story, while the original is pure text. But they both convey the same important themes like censorship.