12893
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 23
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 12894
- Proper Divisor Sum (Aliquot Sum)
- 1
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 12892
- Möbius Function
- -1
- Radical
- 12893
- Omega Function (Ω)
- 1
- Little Omega Function (ω)
- 1
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 24
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- yes
- Composite Number
- no
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- yes
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 1534
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Numbers k such that the continued fraction for sqrt(k) has period 63.at n=18A020402
- Smallest prime with "n^2" as central digit(s).at n=17A038370
- Number of partitions satisfying cn(0,5) + cn(1,5) <= cn(2,5) + cn(3,5) and cn(0,5) + cn(4,5) <= cn(2,5) + cn(3,5).at n=38A039886
- Discriminants of real quadratic fields with class number 1 and related continued fraction period length of 19.at n=30A050968
- Closed 3-dimensional ball numbers (version 1): a(n)= number of integer points (i,j,k) contained in a closed ball of diameter n, centered at (0,0,0).at n=29A053591
- Open 3-dimensional ball numbers (version 1): a(n) is the number of integer points (i,j,k) contained in an open ball of diameter n, centered at (0,0,0).at n=29A053592
- Smallest prime p associated with A064164(n).at n=31A064229
- Smaller of the two factors of the n-th semiprime number of the form m!+1.at n=16A082952
- Value of C in y = x^2 + 5x + C such that y is prime for all x = 0 to 3.at n=30A097434
- Primes of the form 2*3*5*7*n+83.at n=31A141570
- Primes congruent to 17 mod 37.at n=42A142126
- Primes congruent to 19 mod 41.at n=40A142216
- Primes congruent to 36 mod 43.at n=39A142285
- Primes congruent to 15 mod 47.at n=36A142366
- Primes congruent to 6 mod 49.at n=36A142419
- Primes congruent to 14 mod 53.at n=29A142544
- Primes congruent to 23 mod 55.at n=37A142617
- Primes congruent to 31 mod 59.at n=27A142758
- Primes congruent to 22 mod 61.at n=27A142820
- Primes congruent to 41 mod 63.at n=41A142912