9991

Properties by base:

Base 109991 (4 digits)
Digit Sum: 28
Digital Root: 1 sad
Base 20b10011100000111 (14 digits)
Digit Sum: 0b111
Digital Root: 0b1 always happy
Base 8023407 (5 digits)
Digit Sum: 020
Digital Root: 02 sad
Base 160x2707 (4 digits)
Digit Sum: 0x10
Digital Root: 0x1 sad

More about this number at Positiv Integers and Number Empire.

The number is not a prime.

Its 2 (2 unique) factors are:
97
103

Its 4 divisors are:
1
97
103
9991
Its aliquote sum is:
201
makeing it a deficient number.

In HTML this number represents this color:  
#002707
 

As Unicode codepoint (since version 1.1) this number represents this character: TAPE DRIVE in Dingbats (Source: https://www.unicode.org/Public/UCD/latest/ucdxml/ucd.all.grouped.zip); HTML: ✇

The number appears at position 17561 of the decimal digits of π surrounded by
65262485473055861598999140170769838548318875 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: 990.317ms; cpu: 71.5719999999997ms)


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