it is the numbers 1-9 in alphabetical order!
they are in alphabetical order when you spell them all out
Only for those who speak English: the digits of the number are in alphabetic order.
It contains the numbers 1 to 9 in alphabetic order,
Digits are in alphabetical order: Eight, Five, Four, Nine, One etc
There is only one number in the question. One number cannot form a pattern.
It's the only number where the digits are arrange alphabetically, eight...five...four...nine...one...seven...six...three...two...zero. Actually, that answer is not completely true as stated. If you were to plug this number into Google you would find this same answer all over the web. It doesn't take a genius to realize that it is NOT the ONLY number where the digits are arranged alphabetically. For example, drop the 0 at the end and you STILL have a number that is arranged in alphabetical order. The answer should probably say, "It's the only number using all digits between zero and 9, that is arranged in alphabetical order".