4190
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 7560
- Proper Divisor Sum (Aliquot Sum)
- 3370
- 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
- 1672
- Möbius Function
- -1
- Radical
- 4190
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
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
- 108
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- yes
- Odd
- no
Appears in sequences
- a(n) = a(n-1) + a(n-8), with a(i) = 1 for i = 0..7.at n=44A005710
- Coordination sequence T4 for Zeolite Code BOG.at n=46A008052
- Coordination sequence T9 for Zeolite Code EUO.at n=40A008104
- Coordination sequence T5 for Zeolite Code MFI.at n=41A008168
- Coordination sequence T2 for Zeolite Code STI.at n=44A008235
- Expansion of 1/(1 - x^8 - x^9 - ...).at n=52A017902
- a(n) = n*(21*n-1)/2.at n=20A022278
- Values of A038007 not ending in 6 or 8.at n=3A038009
- Coordination sequence T4 for Zeolite Code AFN.at n=46A038404
- Base-9 palindromes that start with 5.at n=17A043032
- Numbers whose base-8 representation has exactly 5 runs.at n=19A043627
- Starting from generation 5 add previous and next term yielding generation 6.at n=31A048452
- a(n) = Sum_{k=1..n} T(n,k), array T as in A049790.at n=22A049791
- Inverse Moebius transform of powers of 2.at n=12A055895
- First (leftmost) digit - second digit + third digit - fourth digit .... = 12.at n=31A061881
- Duplicate of A066966.at n=18A066965
- Total sum of even parts in all partitions of n.at n=18A066966
- Numbers k such that phi(k) + phi(k+1) = k+2.at n=14A067797
- Number of partitions of 2n in which each odd part has even multiplicity and each even part has odd multiplicity.at n=21A100847
- a(n) = prime(x) - pi(x) where x is the least x such that (prime(x+1) - pi(x+1)) - (prime(x) - pi(x)) = n.at n=29A111183