3900

Properties by base:

More about this number at Positiv Integers and Number Empire.

The number is not a prime.

Its 6 (4 unique) factors are:
2² = 4
3
5² = 25
13

Its 36 divisors are:
1
2
3
4
5
6
10
12
13
15
20
25
26
30
39
50
52
60
65
75
78
100
130
150
156
195
260
300
325
390
650
780
975
1300
1950
3900
Its aliquote sum is:
8252
makeing it a abundant number.

As Unicode codepoint (since version 2.0) this number represents this character:༼ TIBETAN MARK ANG KHANG GYON in Tibetan (Source: https://ucdapi.org/unicode/latest/codepoint/dec/3900); HTML: ༼

The number appears at position 1187 of the decimal digits of π surrounded by
92550604009277016711390098488240128583616035 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: 840.506ms; cpu: 89.2480000000004ms)