Analyze the sequence provided below and identify the incorrect number:

448, 448, 447, 439, 412, 347, 223

The correct answer is 347.

To find the incorrect number in the sequence, let us analyze the differences between consecutive terms:

$448-448=0=0^3$

$448-447=1=1^3$

$447-439=8=2^3$

$439-412=27=3^3$

The pattern shows that each term is obtained by subtracting the cube of consecutive non-negative integers ($0^3,1^3,2^3,3^3,4^3,5^3,\dots$) from the previous term.

Following this pattern for the next term:

$412-4^3=412-64=348$

However, the sequence provides 347 instead of 348.

We can verify the final term by using 348:

$348-5^3=348-125=223$

This matches the last term of the given sequence. Thus, 347 is the incorrect number in the sequence.