It corresponds to the Natural minor scale (alias Aeolian mode) of western music system.
Engiruntho (version 2) (Ragam Shivaranjani in charanam) This section covers the theoretical and scientific aspect of this rāgam.
Natabhairavi's notes when shifted using Graha bhedam, yields 5 other major melakarta rāgams, namely, Kalyani, Sankarabharanam, Hanumatodi, Kharaharapriya and Harikambhoji.
One is likely to find Kalyani, Todi, Sankarabharanam and Karaharapriya as the main ragam in concerts, more often than Natabhairavi by a big count.
Especially, when one uses the notes from panchamam(P) to gandharam(G₂) in ārohaṇa and vice versa in Avarohana, this ragam can be easily confused to be Shanmukhapriya while actually.