14929
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
- 14930
- 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
- 14928
- Möbius Function
- -1
- Radical
- 14929
- 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
- 71
- 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
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 1748
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Primes that remain prime through 3 iterations of function f(x) = 5x + 8.at n=23A023286
- a(n) = least k such that 1+2+...+k >= E{1,2,...,n}, where E is the 3rd elementary symmetric function.at n=39A027917
- Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 10.at n=18A031423
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 72 ones.at n=19A031840
- Primes p for which the period of reciprocal = (p-1)/8.at n=24A056213
- Largest prime of which the square still does not exceed the product of first n primes, the n-th primorial.at n=7A067021
- Primes p such that the sum of the digits of p is not prime, but the sum of the cubes of the digits of p is prime.at n=18A091365
- Row sums of a triangle related to the Jacobsthal polynomials.at n=15A108742
- The (1,4)-entry in the matrix M^n, where M is the 4 X 4 matrix {{0, -1, -1, 1}, {1, -1, 0, 0}, {0, 1, 1, 0}, {0, 0, 1, 1 }}.at n=35A122789
- Prime arithmetic mean of ten consecutive primes.at n=34A123096
- Primes p such that p*q-p-q and p*q+p+q are prime where q=nextprime(p).at n=33A128548
- Prime numbers p such that p +- ((p-1)/4) are primes.at n=16A137705
- Primes of the form 76x^2+20xy+145y^2.at n=27A140629
- Primes of the form 210k + 19.at n=38A140843
- Primes congruent to 30 mod 47.at n=37A142381
- Primes congruent to 36 mod 53.at n=30A142566
- Primes congruent to 2 mod 59.at n=31A142729
- Primes congruent to 45 mod 61.at n=29A142843
- a(n) = 1 - 2*n^2 + 4*n*(1 + 2*n^2)/3.at n=18A168547
- a(n) = (4*n^3 - 6*n^2 + 8*n + 9 + 3*(-1)^n)/12.at n=36A168582