404
406
The Number 405: Properties and Meanings
Prime Factors
of
405
=
3
x
3
x
3
x
3
x
5
.
405
is a
13-gonal Number
.
405
is a
42-gonal Number
.
405
is a
136-gonal Number
.
405
is a
Pentagonal Pyramidal Number
.
The Year 405 AD
In the year
405
AD ...
404
406