4344
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 10920
- Proper Divisor Sum (Aliquot Sum)
- 6576
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 1440
- Möbius Function
- 0
- Radical
- 1086
- Omega Function (Ω)
- 5
- Little Omega Function (ω)
- 3
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
- 139
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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
- a(n) = n concatenated with n + 1.at n=42A001704
- Cubes written in base 6.at n=9A004636
- Coordination sequence T3 for Zeolite Code BOG.at n=47A008051
- Coordination sequence T3 for Zeolite Code MFS.at n=41A008175
- Number of solutions to c(1)*prime(1) + ... + c(n)*prime(n) = 2, where c(i) = +-1 for i > 1, c(1) = 1.at n=20A022896
- a(n) = (1/s(1) - 1/s(2) + ... + d/s(n+1)) * LCM{1, 2, ..., n}, where d = (-1)^n, s = A002944, i.e., s(k) = LCM of row k of Pascal's triangle.at n=11A025538
- Pair up the numbers.at n=21A030655
- Numbers k such that the continued fraction for sqrt(k) has even period 2*m and the m-th term of the periodic part is 9.at n=42A031412
- Numbers k such that 43*2^k+1 is prime.at n=17A032371
- Numbers k such that 163*2^k+1 is prime.at n=29A032458
- Numbers with digits 3 and 4 only.at n=25A032834
- Number of partitions of n with equal nonzero number of parts congruent to each of 0 and 1 (mod 5).at n=43A035562
- Number of partitions of n with equal nonzero number of parts congruent to each of 0, 1 and 3 (mod 5).at n=53A035583
- Numbers having three 4's in base 10.at n=7A043507
- Partial sums of A045954.at n=44A045964
- Concatenate prevprime(n) and n.at n=41A049851
- Powers of ten written in base 6.at n=3A055477
- Number of step shifted (decimated) sequences using a maximum of two different symbols.at n=14A056371
- a(0) = 0; a(n) is obtained by incrementing each digit of a(n-1) by 3.at n=8A061514
- Numbers k such that sigma(k+1) = 4*phi(k).at n=41A067262