14081
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 14082
- 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
- 14080
- Möbius Function
- -1
- Radical
- 14081
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 58
- 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
- yes
- Mersenne Prime
- no
- Sophie Germain Prime
- yes
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 1660
- 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 odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 9.at n=24A031422
- a(n)=a(n-1)+a(n-2)-d, where d=a(n/3) if 3 divides n, else d=0; 2 initial terms.at n=22A050193
- Primes at which the difference pattern X24Y (X and Y >= 6) occurs in A001223.at n=31A052163
- First term of weak prime quintets: p(m+1)-p(m) < p(m+2)-p(m+1) < p(m+3)-p(m+2) < p(m+4)-p(m+3).at n=32A054823
- Primes p for which the period of reciprocal = (p-1)/8.at n=23A056213
- Lesser of twin primes whose average is 6 times a prime.at n=37A060213
- Expansion of (1-x)^(-1)/(1+2*x^2-2*x^3).at n=21A077891
- Primes p such that p*(p-1) divides 3^(p-1)-1.at n=20A081763
- Balanced primes of order five.at n=31A096697
- Smallest prime equal to the sum of n distinct squares.at n=32A100559
- Lower bound twin primes such that their digital reverse is prime and a lower bound twin prime.at n=27A101783
- Primes of the form 512n+257.at n=5A105131
- Squares of the norms of Gaussian primes from A107629.at n=31A107630
- Integers n such that 10^n + 27 is prime.at n=5A108312
- Numbers k such that sigma(k) plus the k-th prime is a triangular number.at n=36A115907
- A variation on Flavius's sieves (A000960, A099207): Start with the Chen primes; at the k-th sieving step, remove every (k+1)-st term of the sequence remaining after the (k-1)-st sieving step; iterate.at n=32A118500
- Smaller of two consecutive Sophie Germain primes with the same digital sum.at n=34A118506
- Larger of two consecutive Sophie Germain primes with the same digital sum.at n=33A118507
- Sophie Germain primes for which the reversal is also a Sophie Germain prime.at n=18A118573
- Primes of the form 210n+11.at n=33A140840