Danger, do not visit the link at the bottom of this posting if you are as boring as I am, it will consume unhealthy amounts of time.
The site graphically shows the popularity of various numbers on the web, their rank and significance.
404 is the 101st most popular number of 100,000 and is associated with the Peugeot 404 in addition to the standard http ‘not found’ error message.
Yours sincerely
Cliff Claven