6229
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 6230
- Proper Divisor Sum (Aliquot Sum)
- 1
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 6228
- Möbius Function
- -1
- Radical
- 6229
- 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
- 124
- 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
- 811
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Strobogrammatic primes: the same upside down (calculator-style numerals).at n=8A018847
- Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite APC = AlPO4-C [Al16P16O64](1,2) starting from a T2 atom.at n=5A018977
- Numbers k such that the continued fraction for sqrt(k) has period 31.at n=25A020370
- Expansion of 1/((1-6x)(1-7x)(1-12x)).at n=3A020577
- Primes that remain prime through 2 iterations of the function f(x) = 5x + 8.at n=43A023255
- Primes that remain prime through 3 iterations of function f(x) = 5x + 8.at n=14A023286
- Lucky numbers with size of gaps equal to 18 (upper terms).at n=37A031901
- Lower prime of a difference of 18 between consecutive primes.at n=22A031936
- Numerators of continued fraction convergents to sqrt(809).at n=6A042560
- Numbers having four 4's in base 5.at n=32A043368
- Primes with first digit 6.at n=45A045712
- Primes p such that pp'-2 is prime, where p' denotes the next prime after p.at n=36A048797
- Recip transform of 2*(1 + x^3 + x^4 + x^5)-1/(1-x).at n=8A049159
- Numbers n such that 115*2^n-1 is prime.at n=19A050583
- Primes p such that a pure prime power occurs between p and the next prime.at n=40A053607
- Largest prime below prime(n)^2 (A001248).at n=21A054270
- Let prime(i) = i-th prime, let twin(n) = (P,Q) be n-th pair of twin primes; sequence gives prime(Q).at n=30A057473
- Primes p such that p^5 reversed is also prime.at n=35A059698
- Primes p such that p^7 reversed is also prime.at n=42A059700
- Largest prime < a nontrivial power of a prime.at n=44A060845