As character names:

U+06F4 EXTENDED ARABIC-INDIC DIGIT FOUR character (۴)

As raw characters:

۴

As a string of HTML entities:

۴

Decoder output:

Byte number 1 is decimal 224, hex 0xE0, octal \340, binary 11100000
This is the first byte of a 3 byte sequence.

Byte number 2 is decimal 155, hex 0x9B, octal \233, binary 10011011
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 180, hex 0xB4, octal \264, binary 10110100
This is continuation byte 2, expecting 0 more.

U+06F4	EXTENDED ARABIC-INDIC DIGIT FOUR
	* Persian has a different glyph than Sindhi and Urdu