It is a 9 letter word - 123456789

It is a 9 letter word - 123456789.
if u loose it, you die.
if you have 234, you can 1234.
56 is one type of disease.
89 indicates exact location & time.
2 & 7 are same letter.
3 & 8 are same letter.
5 & 9 are same letter.
guess the word!