Books like The Positronic Man
Isaac Asimov, Robert Silverberg
The Positronic Man is 248 pages, about 4 hours 33 minutes at 250 words a minute.
12 books to read next
How long each takes
The Martian Chronicles 4.8 h 
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Isaac Asimov's Robot City 1 - Odyssey 4.1 h 
The Terminal Man 5.1 h 
The Dispossessed 6.5 h 
The Invisible Man 3.1 h 
The Gunslinger 4.8 h 
Neuromancer 5.8 h 
One Shot 8.0 h 
The Left Hand of Darkness 5.6 h 
Bad Luck and Trouble 8.2 h 
The Sirens of Titan 5.9 h Bar height shows length. Estimated at 250 words a minute.