8083
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
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 8280
- Proper Divisor Sum (Aliquot Sum)
- 197
- 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
- 7888
- Möbius Function
- 1
- Radical
- 8083
- Omega Function (Ω)
- 2
- Little Omega Function (ω)
- 2
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
- 145
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- 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
- no
- Odd
- yes
Appears in sequences
- Denominators of continued fraction convergents to sqrt(108).at n=10A041195
- Numbers k such that d(k) + d(k+1) + d(k+2) = 8, where d(k) = A001223.at n=35A064026
- Sum of squares of digits of n is equal to the largest prime factor of n.at n=22A074302
- Composite numbers k such that the continued fraction for k/m contains no 2 for any 1 <= m <= k.at n=30A082409
- Numbers n such that A003313(n) = A003313(2n).at n=32A086878
- Numbers n such that 99 * 10^n + 1 is prime.at n=15A109713
- Numbers k such that the concatenation of k with k-2 gives a square.at n=2A115431
- Duplicate of A115431.at n=2A116117
- Duplicate of A115431.at n=2A116135
- Last entry (and high point) in segment n of A079051.at n=34A117516
- Numbers n for which 12n+1, 12n+5, 12n+7 and 12n+11 are primes.at n=40A123985
- Indices k such that the (k+1)-st partial sum of primes divided by k is an integer.at n=11A134126
- Those n for which A140259(n) = A002264(n+11).at n=17A140260
- Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0), ending on the vertical axis and consisting of n steps taken from {(-1, -1), (-1, 1), (0, -1), (1, 0)}.at n=12A151499
- Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and w+x+y>1.at n=13A211613
- Least integer b>2n+1 such that the numbers written as [1,3,...,2n-1,2n+1] and [2n+1,2n-1,...,3,1] in base b are both prime.at n=33A218465
- a(n) = prime(n) * prime(2*n-1).at n=16A219603
- a(n) = n*(9*n + 25)/2 + 6.at n=41A235332
- Terms in A247665 which are neither primes nor prime powers, in order of appearance.at n=53A248391
- Number of squares of all sizes in 3*n*(n+1)/2-ominoes in form of three-quarters of Aztec diamonds.at n=26A258440