9919

Properties by base:

More about this number at Positiv Integers and Number Empire.

The number is not a prime.

Its 3 (3 unique) factors are:
7
13
109

Its 8 divisors are:
1
7
13
91
109
763
1417
9919
Its aliquote sum is:
2401
makeing it a deficient number.

As Unicode codepoint (since version 5.2) this number represents this character:⚿ SQUARED KEY in Misc_Symbols (Source: https://ucdapi.org/unicode/latest/codepoint/dec/9919); HTML: ⚿

The number appears at position 6038 of the decimal digits of π surrounded by
16342522577195429162991930645537799140373404 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: 950.235ms; cpu: 80.6069999999997ms)