11443
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 11444
- 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
- 11442
- Möbius Function
- -1
- Radical
- 11443
- 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
- 81
- 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
- 1380
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Primes of the form n^2 - 6.at n=17A028880
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 68 ones.at n=9A031836
- Smallest prime with "n^2" as central digit(s).at n=12A038370
- Discriminants of imaginary quadratic fields with class number 17 (negated).at n=24A046014
- Number of positive integers <= 2^n of form x^2 + 7 y^2.at n=16A054151
- Primes p such that p^9 reversed is also prime.at n=34A059702
- Primes with 2 representations: p*q*r - 1 = u*v*w + 1 where p, q, r, u, v and w are primes.at n=32A063644
- Primes p such that both p-1 and p+1 have at most 3 prime factors, counted with multiplicity; i.e., primes p such that bigomega(p-1) <= 3 and bigomega(p+1) <= 3, where bigomega(n) = A001222(n).at n=38A079153
- Primes p such that 6p + 1 and (p-1)/6 are primes.at n=23A085957
- Numbers m such that for increasing b the numbers of zeros in base b representation of m are monotonically decreasing, 1<b<m.at n=42A089969
- Prime(p)-4 for primes p such that prime(p) - 4 is prime.at n=29A094069
- Primes with maximal digit = 4.at n=42A106098
- Primes congruent to 10 mod 37.at n=37A142119
- Primes congruent to 4 mod 41.at n=35A142201
- Primes congruent to 5 mod 43.at n=32A142254
- Primes congruent to 22 mod 47.at n=32A142373
- Primes congruent to 26 mod 49.at n=35A142436
- Primes congruent to 19 mod 51.at n=41A142487
- Primes congruent to 48 mod 53.at n=25A142578
- Primes congruent to 3 mod 55.at n=36A142603