Greetings from Sweden. Before switching to European standard 112 in 1996, the emergency number was… 90 000.
Three reasons for that:
1) Unlike most other countries, the Swedish dials had the number nine, and not zero, at the end. So "90 000" was considered easy to remember and easy to hit, even in the dark.
2) "90 000" was relatively easy to call by hand using the switch hook, on a telephone without a functioning number plate. (Swedish system had 1 click for zero, not 10.)
3) The statistical probability of a loose contact or some other type of electrical fault producing the sequence "90 000" is small.
