3049
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 3050
- Proper Divisor Sum (Aliquot Sum)
- 1
- 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
- 3048
- Möbius Function
- -1
- Radical
- 3049
- 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
- 123
- 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
- 437
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Primes p such that the multiplicative order of 2 modulo p is (p-1)/4.at n=19A001134
- Numbers k such that 39*2^k + 1 is prime.at n=29A002269
- Number of rooted connected graphs where every block is a complete graph.at n=9A007563
- Primes p == 1 (mod 8), p = a^2 + 64*b^2 such that y^2 = x^3 + p*x has rank 2.at n=37A007766
- Number of ordered 5-tuples of integers from [ 1,n ] with no common factors among quadruples.at n=11A015653
- Expansion of 1/(1-x^8-x^9-x^10-x^11-x^12-x^13-x^14-x^15-x^16-x^17).at n=53A017875
- Numbers k such that the continued fraction for sqrt(k) has period 87.at n=0A020426
- Primes p such that 3*p + 4 and 9*p + 16 are also prime.at n=35A023247
- Convolution of (F(2), F(3), F(4), ...) and primes.at n=11A023657
- Numbers whose least quadratic nonresidue (A020649) is 11.at n=17A025024
- Sequence A025513 divided by 2.at n=13A025514
- a(n) = Sum_{k=0..n-3} T(n,k) * T(n,k+3), with T given by A026615.at n=4A026959
- Number of similarity classes of triangles which can be drawn using the lattice points in an n X n grid for vertices.at n=12A028492
- Primes that are palindromic in base 5.at n=24A029973
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 42 ones.at n=4A031810
- Lucky numbers with size of gaps equal to 10 (upper terms).at n=34A031893
- Upper prime of a difference of 8 between consecutive primes.at n=41A031927
- Lower prime of a difference of 12 between consecutive primes.at n=28A031930
- Numbers whose set of base-11 digits is {2,3}.at n=18A032811
- Primes of form x^2+38*y^2.at n=32A033226