| Base 10 | 149 (3 digits) | ||
| Digit Sum: 14 | Digital Root: 5 | sad | |
| Base 2 | 0b10010101 (8 digits) | ||
| Digit Sum: 0b100 | Digital Root: 0b1 | always happy | |
| Base 8 | 0225 (3 digits) | ||
| Digit Sum: 011 | Digital Root: 02 | sad | |
| Base 16 | 0x95 (2 digits) | ||
| Digit Sum: 0xe | Digital Root: 0xe | happy | |
More about this number at Positiv Integers and Number Empire.
The number is a prime
It is a Twin prime for 151.
| In HTML this number represents this color: | 
 ⇧↑⇧↑⇧↑ #000095 ⇩↓⇩↓⇩↓  | 
As Unicode codepoint (since version 1.1) this number represents this character: MESSAGE WAITING in Latin_1_Sup (Source: https://www.unicode.org/Public/UCD/latest/ucdxml/ucd.all.grouped.zip); HTML: •
In the work of Johann Sebastian Bach BWV 149 is Man singet mit Freuden vom Sieg
The number appears at position 2606 of the decimal digits of π surrounded by
4760917824938589009714909675985261365549781 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: 927.317ms; cpu: 87.3200000000001ms)