14447
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 14448
- 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
- 14446
- Möbius Function
- -1
- Radical
- 14447
- 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
- 156
- 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
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 1694
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Number of trees on n nodes with forbidden limbs.at n=17A014279
- Smallest nontrivial extension of n-th square which is a prime.at n=37A030685
- Number of partitions satisfying (cn(0,5) <= cn(2,5) = cn(3,5)).at n=48A036804
- a(n) = 10*n^2 + 7.at n=38A061722
- Smallest prime containing the n-th square in decimal notation.at n=37A065144
- Smallest prime that begins with the n-th square in decimal notation.at n=37A065145
- Primes with either no internal digits or all internal digits are 4.at n=51A069679
- a(n) is the smallest m such that n!-m and n!+m are both primes.at n=49A075409
- Primes having only {1, 4, 7} as digits.at n=33A079651
- Smallest prime of the form (prime(n)*prime(n+1)+q)/2 for some integer n and some prime q.at n=37A100557
- Twin prime pairs k-1 and k+1 such that the squares of both are present in A115557.at n=40A115560
- Lesser of a twin-prime pair where both are expressible as the sum of two triangular numbers.at n=28A118638
- Prime septets of form k, k+2100, k+4200, k+6300, k+8400, k+10500, k+12600.at n=12A123107
- Prime septets of form k, k+2100, k+4200, k+6300, k+8400, k+10500, k+12600.at n=6A123107
- Primes congruent to 15 mod 41.at n=37A142212
- Primes congruent to 42 mod 43.at n=40A142291
- Primes congruent to 18 mod 47.at n=37A142369
- Primes congruent to 41 mod 49.at n=39A142449
- Primes congruent to 31 mod 53.at n=32A142561
- Primes congruent to 51 mod 59.at n=26A142778