17399
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 29
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 17664
- Proper Divisor Sum (Aliquot Sum)
- 265
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 17136
- Möbius Function
- 1
- Radical
- 17399
- 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
- 203
- 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
- n-th 4k+1 prime times (n+1)st 4k+3 prime.at n=14A048628
- Row sums of A059032.at n=6A059035
- In base 4, smallest number that requires n Reverse and Add! steps to reach a palindrome.at n=22A077441
- a(n) = prime(n)*prime(n+2).at n=30A090076
- Number of partitions of n such that largest part k occurs at most floor(k/2) times.at n=35A118084
- a(n) = prime(n) times the n-th nonnegative noncomposite.at n=32A176098
- (1/2)*A206803.at n=34A206804
- Number of binary arrays indicating the locations of trailing edge maxima of a random length-n 0..4 array extended with zeros and convolved with 1,3,3,1.at n=20A222023
- S_5 sequence in partition of integers > 1 described in A240521.at n=37A240522
- Absolute discriminants of complex quadratic fields with 3-class rank 2.at n=14A242862
- Brady numbers: B(n) = B(n - 1) + B(n - 2) with B(1) = 2308 and B(2) = 4261.at n=4A247698
- Quasi-Carmichael numbers to exactly two bases.at n=31A257752
- Sequence of pairwise relatively prime numbers of class P_5 (see comment in A275246).at n=15A275249