14389
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 25
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 14390
- Proper Divisor Sum (Aliquot Sum)
- 1
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 14388
- Möbius Function
- -1
- Radical
- 14389
- Omega Function (Ω)
- 1
- 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
- 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
- 120
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- yes
- Composite Number
- no
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- yes
- Prime Factorization
- no
- Twin Prime
- yes
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 1686
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Numbers k such that the continued fraction for sqrt(k) has period 85.at n=12A020424
- 4th elementary symmetric function of the first n+3 positive integers congruent to 1 mod 4.at n=1A024380
- a(n) = n-th elementary symmetric function of the first n+1 positive integers congruent to 1 mod 4.at n=4A024382
- Cube root of A030697.at n=30A030698
- a(n) = smallest prime == 1 (mod 4) such that a(n) is a square mod a(i), all i<n.at n=9A034700
- Nested floor product of n and fractions (k+1)/k for all k>0 (mod 5), divided by 5.at n=16A073362
- Numerator of the generalized harmonic number H(n,4,1).at n=4A075136
- Duplicate of A075136.at n=4A089153
- Primes of the form n^2 - 11.at n=17A091272
- Prime numbers which when written in base 7 have a composite digit-sum.at n=18A096790
- Prime numbers p such that p^3 - p + 1 and p^3 + p - 1 are both primes.at n=21A137463
- Primes congruent to 7 mod 47.at n=37A142358
- Primes congruent to 32 mod 49.at n=40A142441
- Primes congruent to 26 mod 53.at n=30A142556
- Primes congruent to 52 mod 59.at n=33A142779
- Primes congruent to 54 mod 61.at n=27A142852
- Smaller of 3 consecutive prime numbers such that p1*p2*p3+d1+d2-1=average of twin prime pairs, d1(delta)=p2-p1,d2(delta)=p3-p2.at n=7A153402
- Lesser of two consecutive primes, p < q, such that both p*q+p-q and p*q-p+q are prime numbers.at n=22A154553
- a(n) = 13*n^2 + 7*n + 1.at n=32A168240
- Primes p such that reversal( p^2 ) + p is also prime.at n=42A232446