11449
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 3
- Divisor Sum
- 11557
- Proper Divisor Sum (Aliquot Sum)
- 108
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 11342
- Möbius Function
- 0
- Radical
- 107
- Omega Function (Ω)
- 2
- 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
- yes
- 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
- 130
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- Squarefree Number
- no
- Prime Power
- yes
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- yes
- Achilles Number
- no
- Perfect Power
- yes
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Squares of primes.at n=27A001248
- Squares with digits 1, 4, 9.at n=7A006716
- Squares formed by concatenating other squares, not ending in 0.at n=16A009404
- Numbers m such that phi(m) * sigma(m) + k^2 is not a square for any k.at n=33A015713
- a(n) = (3n+2)^2.at n=36A016790
- a(n) = (4n + 3)^2.at n=26A016838
- a(n) = (5*n + 2)^2.at n=21A016874
- a(n) = (6*n + 5)^2.at n=17A016970
- a(n) = (7*n+2)^2.at n=15A017006
- a(n) = (8n + 3)^2.at n=13A017102
- a(n) = (9*n + 8)^2.at n=11A017258
- a(n) = (10*n + 7)^2.at n=10A017354
- a(n) = (11*n + 8)^2.at n=9A017486
- a(n) = (12*n + 11)^2.at n=8A017654
- Squares whose digits are squares.at n=15A019544
- Squares which are a decimal concatenation of two or more squares.at n=26A019547
- a(n)-th prime is sum of first k primes for some k.at n=26A020641
- Pisot sequence T(5,9), a(n) = floor(a(n-1)^2/a(n-2)).at n=14A020750
- Squares of (odd numbers not divisible by 5).at n=42A028375
- Squares with digits in nondecreasing order.at n=20A028820