11099
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 12120
- Proper Divisor Sum (Aliquot Sum)
- 1021
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 10080
- Möbius Function
- 1
- Radical
- 11099
- 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
- 91
- 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
- Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite PAR = Partheite Ca8[Al16Si16O60(OH)8].16H2O starting with a T4 atom.at n=6A019046
- (d(n)-r(n))/5, where d = A006527 and r is the periodic sequence with fundamental period (4,1,4,0,1).at n=53A026036
- [ exp(15/19)*n! ].at n=6A030863
- Composite numbers k such that digits in k and in juxtaposition of prime factors of k are the same (apart from multiplicity).at n=18A035141
- Binary packing of Connell sequence (shifted once right).at n=9A036571
- Reversion of y - y^2 - y^4 + y^5.at n=10A063030
- Triangle of numbers relating two sequences (A073157 and A073155).at n=31A073154
- Values of n such that A006046(n)/n^theta, where theta=log(3)/log(2), is a local minimum, computed according to Harborth's recurrence.at n=13A077465
- Cumulative minima of A006046(n)/n^theta, where theta=log(3)/log(2), is a local minimum.at n=15A084230
- Numbers k such that k, k+2, k+4, k+6, k+8 are semiprimes.at n=37A092127
- a(n) = ceiling((sqrt n)^(sqrt n)).at n=29A094093
- Sum of primes q with prime(n) < q < 2*prime(n).at n=46A108313
- Multiples of 11 containing an 11 in their decimal representation.at n=37A121031
- Composite numbers n such that the distinct digits in n and the distinct digits in the proper divisors of n are the same.at n=4A237713
- (p^2 - 3)/2 for odd primes p.at n=33A243887
- Number of 312-avoiding derangements of {1,2,...,n}.at n=11A258041
- Numbers k such that the set of all the decimal digits of k is the same as the set of all the decimal digits of the proper divisors of k.at n=5A282755
- Partial sums of A300000.at n=4A299301
- a(n) is the number of free polyominoes with sprawl n.at n=28A338213
- G.f.: Sum_{k>=0} x^(k^4) / Product_{j=1..k^4} (1 - x^j).at n=50A339235