14621
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
- 3
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 14622
- 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
- 14620
- Möbius Function
- -1
- Radical
- 14621
- 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
- 120
- 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
- yes
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 1711
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Primes p such that p, p+6, p+12, p+18 are all primes.at n=28A023271
- Primes of the form j^2 + (j+1)^2.at n=30A027862
- Denominators of continued fraction convergents to sqrt(822).at n=6A042587
- Primes p such that x^43 = 2 has no solution mod p.at n=38A059243
- a(n) = (2*n-1)^2 + (2*n)^2.at n=42A060820
- Initial term in sequence of four consecutive primes separated by 3 consecutive differences each <=6 (i.e., when d = 2, 4 or 6) and forming d-pattern=[6,2,4]; short d-string notation of pattern = [624].at n=7A078853
- Primes p such that the differences between the 5 consecutive primes starting with p are (6,2,4,6).at n=3A078958
- a(n) = 8*n^2 - 4*n + 1.at n=43A080856
- Primes of the form (4*k + 1)^2 + (4*k + 2)^2 where k=0,1,2,3,...at n=8A087871
- Nontrivial Delannoy numbers that are primes.at n=32A101167
- Column k=2 sequence of array A103728.at n=38A103729
- Primes p such that the smallest integer whose sum of decimal digits is p is prime.at n=25A129990
- Centered square numbers that are prime powers of the form (4n+1)^k.at n=32A133322
- Primes p such that the left prime neighbors p1, p2 of p as well as the right prime neighbors q1, q2 of p form twin prime pairs and the sum p1 + p2 + p + q1 + q2 is also prime.at n=16A138396
- Primes congruent to 1 mod 43.at n=40A142250
- Primes congruent to 4 mod 47.at n=33A142356
- Primes congruent to 19 mod 49.at n=39A142430
- Primes congruent to 46 mod 53.at n=31A142576
- Primes congruent to 48 mod 59.at n=33A142775
- Primes congruent to 42 mod 61.at n=28A142840