409 in words

409 is written "four hundred nine". British English inserts "and" before the final part, giving "four hundred and nine"; American English leaves it out.

Where each word comes from

The same number, other ways

In words (US)

Four hundred nine

In words (UK)

Four hundred and nine

Ordinal

409th — four hundred ninth

Roman numeral

CDIX

Digits

409

Writing it on a cheque

On a cheque the amount line reads "Four hundred and nine and 00/100" — or "Four hundred and nine only" in Indian and much of Commonwealth practice. The fraction or the word "only" exists to stop anyone appending digits after what you wrote. Draw a line through any space left over for the same reason.