Numbers that make words are called “Smart Numbers”, or sometimes premium numbers. To get a number that makes a word, goto the smartnumbers website: www.smartnumbers.com.au and use the search facility to see if its available.
If it is available, signup and place a bid on the number. Expect to pay $42 for registration, and at least $250 for the number through the auction process. Also allow a few weeks for the process to complete.