3439
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
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 3640
- Proper Divisor Sum (Aliquot Sum)
- 201
- 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
- 3240
- Möbius Function
- 1
- Radical
- 3439
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 149
- 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
- Rhombic dodecahedral numbers: a(n) = n^4 - (n - 1)^4.at n=9A005917
- a(n) = n*(n^2 + 1)/2.at n=19A006003
- Coordination sequence T4 for Zeolite Code DAC.at n=37A008070
- Coordination sequence T4 for Zeolite Code TON.at n=36A008244
- Coordination sequence T3 for Zeolite Code RTE.at n=40A009892
- Coordination sequence T2 for Zeolite Code VSV.at n=38A009915
- a(n) = 10^n - 9^n.at n=4A016189
- Coordination sequence T1 for Zeolite Code CZP.at n=38A019456
- Pseudoprimes to base 39.at n=11A020167
- Pseudoprimes to base 43.at n=40A020171
- Pseudoprimes to base 48.at n=27A020176
- Pseudoprimes to base 49.at n=49A020177
- Pseudoprimes to base 62.at n=29A020190
- Pseudoprimes to base 65.at n=23A020193
- Pseudoprimes to base 73.at n=42A020201
- Pseudoprimes to base 80.at n=28A020208
- Strong pseudoprimes to base 39.at n=4A020265
- Strong pseudoprimes to base 43.at n=7A020269
- Strong pseudoprimes to base 62.at n=11A020288
- Strong pseudoprimes to base 73.at n=8A020299