
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
Michael's phone number is 865-3421, and the sum of the digits in his phone number and his apartment number are the same. All digits in his apartment number are distinct. What is the largest possible value of Michael's apartment number?

Present the answer in LaTex format: \boxed{Your answer}
user