9009

Properties by base:

More about this number at Positiv Integers and Number Empire.

The number is not a prime.

Its 5 (4 unique) factors are:
3² = 9
7
11
13

Its 24 divisors are:
1
3
7
9
11
13
21
33
39
63
77
91
99
117
143
231
273
429
693
819
1001
1287
3003
9009
Its aliquote sum is:
8463
makeing it a deficient number.

As Unicode codepoint (since version 1.1) this number represents this character:⌱ DIMENSION ORIGIN in Misc_Technical (Source: https://ucdapi.org/unicode/latest/codepoint/dec/9009); HTML: ⌱

The number appears at position 1188 of the decimal digits of π surrounded by
25506040092770167113900984882401285836160356 Source: The Pi-Search Page

Computations done with Math::BigInt 1.999811 and Math::Pari 2.030523 based on PARI/GP 2.11.3 (elapsed: 784.903ms; cpu: 81.3869999999994ms)