Wrong Integer value

Linux and Unix-Like Linux
1

I am migrating some shell script from Unix to Linux and i am getting wrong value for integer variable.

In Unix:
integer X=007300
echo $X
7300

In Linux:
integer X=007300
echo $X
3776

Please help me why it is giving wrong output.

2

octal conversion taking place with the leading zeros.

~/$ printf "%o\n" 3776
7300

EDIT: It's happening in my workstation which uses ksh93 (Ubuntu) but not the ksh on my server, RHEL-4.8 pdksh-5.2.14-30.6
Perhaps installing pdksh if you are working under ksh93 would resolve
Confirmed (invoking pdksh on my workstation resolves the issue):

~/$ pdksh 
$ integer x=007300
$ echo $x
7300