11447
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 11448
- 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
- 11446
- Möbius Function
- -1
- Radical
- 11447
- 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
- 174
- 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
- 1381
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Numbers that are the sum of 9 positive 7th powers.at n=44A003376
- Smallest prime factor of Mersenne numbers 2^p-1, where p is prime.at n=24A016047
- Primes that remain prime through 2 iterations of function f(x) = 8x + 1.at n=28A023260
- Primes of the form k^2 - 2.at n=27A028871
- Lower prime of a difference of 20 between consecutive primes.at n=21A031938
- a(n) = prime(n)*prime(n+1) - prime(n) - prime(n+1).at n=27A037165
- The sequence e when b=[ 1,0,1,1,1,... ].at n=38A042953
- a(n) = prime(n)^2 - 2.at n=27A049001
- Primes of form p^2 - 2, where p is prime.at n=14A049002
- Least prime in A031938 (lesser of primes differing by 20) whose distance to the next 20-twin is 6*n.at n=21A052359
- Primes p of form q^k-2 where q is also a prime and k > 1.at n=19A053705
- Largest prime below prime(n)^2 (A001248).at n=27A054270
- Primes having only {1, 4, 7} as digits.at n=27A079651
- Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=1, r=5, I={0,1,3}.at n=44A079957
- 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=43A089969
- Primes that are 2 less than a perfect power m^k, k >= 2.at n=30A094786
- Primes p = p_(n+1) such that p_n + p_(n+2) = 2*p_(n+1) + 16.at n=27A095651
- Primes of the form p*q - p - q, where p and q are two successive primes.at n=9A096345
- Primes of the form p^2 + p - q, where p and q are consecutive primes.at n=10A099183
- Primes of the form m^k-k, with m and k > 1.at n=37A099228