3910
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 7776
- Proper Divisor Sum (Aliquot Sum)
- 3866
- 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
- 1408
- Möbius Function
- 1
- Radical
- 3910
- Omega Function (Ω)
- 4
- Little Omega Function (ω)
- 4
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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 100
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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
- yes
- Odd
- no
Appears in sequences
- Coordination sequence T1 for Zeolite Code ABW and ATN.at n=43A008000
- Coordination sequence T2 for Zeolite Code MFS.at n=39A008174
- Coordination sequence T2 for Zeolite Code TON.at n=39A008242
- Numbers whose sum of divisors is a fifth power.at n=9A019423
- a(n) = n*(27*n + 1)/2.at n=17A022285
- Number of partitions of n with equal number of parts congruent to each of 0 and 2 (mod 5).at n=37A035553
- Number of partitions with at most one part divisible by 5.at n=28A039905
- Numbers k such that the string 1,0 occurs in the base 10 representation of k but not of k-1.at n=38A044342
- Numbers n such that string 1,0 occurs in the base 10 representation of n but not of n+1.at n=38A044723
- Integers whose sum of divisors is 6^5 = 7776.at n=4A048255
- Number of digits in n-th term of A001387.at n=20A049194
- Numbers k such that k+1, k^2+1 and k^4+1 are primes.at n=21A070325
- Number of two-rowed partitions of length 4.at n=23A070557
- Squarefree numbers having exactly three prime gaps.at n=9A073489
- Numbers having exactly three prime gaps in their factorization.at n=10A073495
- a(1) = 1; a(n) = Sum_{k=1..n-1} a(floor((n-1)/k)).at n=35A078346
- Expansion of (5 - 9*x + 6*x^2)/(1-x)^4.at n=22A080957
- Number of configurations of the sliding block 8-puzzle that require a minimum of n moves to be reached, starting with the empty square in one of the corners.at n=28A089473
- a(n) = sigma(n,2) + sigma(n+1,2).at n=38A092411
- Positive integers n such that n^11 + 1 is semiprime.at n=22A105122