9-digit Number Puzzle - Solution

The Puzzle:

9-digit Number
What 9-digit number has the following features:

It has all 9 digits from 1 to 9

It can be exactly divided by 6 and 7

Each time it is rounded (starting with units, then tens, hundreds, etc) it rounds in an alternate pattern (up, down, up ...), until after rounding 8 times the final number is 500000000

After rounding four times the sum of the digits is 24

Our Solution:

473816952 - if rounding changes the next numeral character
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