1799
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 26
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 2064
- Proper Divisor Sum (Aliquot Sum)
- 265
- 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
- 1536
- Möbius Function
- 1
- Radical
- 1799
- 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
- 68
- 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
- a(n) = 3*n^2 + 3*n - 1.at n=24A004538
- Coordination sequence T1 for Zeolite Code AFY.at n=35A008029
- Coordination sequence T5 for Zeolite Code PAU.at n=31A008223
- Coordination sequence T4 for Zeolite Code -PAR.at n=30A009858
- Expansion of e.g.f. log(sech(x) + arctan(x)).at n=7A013205
- Six iterations of Reverse and Add are needed to reach a palindrome.at n=32A015984
- Numbers with exactly 3 4's in base 5 expansion.at n=37A023740
- a(n) = position of 2*n^3 in A003325.at n=50A024667
- Numbers whose base-5 representation has 3 fewer 0's than 4's.at n=28A031476
- Numbers whose base-10 representation has 2 fewer 0's than 9's.at n=31A031500
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 41.at n=11A031539
- "BFK" (reversible, size, unlabeled) transform of 1,2,3,4...at n=12A032045
- Coordination sequence T4 for Zeolite Code SBE.at n=34A033607
- Number of partitions of n with equal number of parts congruent to each of 0 and 1 (mod 3).at n=37A035534
- Numbers k such that k-th and (k+1)-st term of A038593 differ by 9.at n=46A038640
- Denominators of continued fraction convergents to sqrt(413).at n=6A041785
- Denominators of continued fraction convergents to sqrt(898).at n=5A042737
- Numerators of continued fraction convergents to sqrt(899).at n=3A042738
- Numbers having two 9's in base 10.at n=34A043526
- Numbers k such that 1 and 7 occur juxtaposed in the base-10 representation of k but not of k+1.at n=34A044010