11349
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 18
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 17836
- Proper Divisor Sum (Aliquot Sum)
- 6487
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 6912
- Möbius Function
- 0
- Radical
- 3783
- Omega Function (Ω)
- 4
- 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
- 37
- 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
- no
- Odd
- yes
Appears in sequences
- Numbers k where |cos(k)| (or |cosec(k)| or |cot(k)|) decreases monotonically to 0; also numbers k where |tan(k)| (or |sec(k)|, or |sin(k)|) increases.at n=37A004112
- Least k such that tan(k) > tan(a(n-1)), for n >= 1, where a(0) = 0.at n=48A024814
- Gaps of 2 in sequence A038593 (upper terms).at n=16A038644
- Numbers ending with '9' that are the difference of two positive cubes.at n=36A038864
- a(n) = (n+3)^3 - n^3.at n=33A038865
- Numbers k where cos(k) decreases monotonically to 0.at n=19A046957
- Numbers k where sin(k) increases monotonically to 1 (or cosec(k) decreases).at n=23A046959
- Numbers k such that 111*2^k-1 is prime.at n=37A050581
- Numbers n such that the Diophantine equation x^4+y^5=n^4 has solutions.at n=23A070756
- Absolute value of difference between counts of uninterrupted runs of single primes in A092636 and A092637.at n=10A092638
- Multiples of 13 containing a 13 in their decimal representation.at n=29A121033
- Number of fusenes with 26 hexagons, C_(2v) symmetry and containing n carbon atoms.at n=11A123662
- Has two properties: concatenation of its digits is same string as concatenation of digits of its first differences and every number appears exactly one of the sequence or its first differences.at n=34A139310
- Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, 0), (0, 0, 1), (1, 0, -1), (1, 1, 1)}.at n=7A150795
- a(0)=1, a(1)=9, a(n)= 19*a(n-1)-81*a(n-2) for n>1.at n=4A165324
- a(n) = 3*n*(5*n-1)/2.at n=38A167469
- Numbers that are repdigits with length > 2 in more than one base.at n=28A167783
- Expansion of (1 - 2*x^2)/(1 + x)^5. Fourth column of Riordan triangle A248156.at n=25A248160
- Numbers m such that beta(m) = tau(m)/2 + 1 where beta(m) is the number of Brazilian representations of m and tau(m) is the number of divisors of m.at n=26A326381
- Non-oblong composites m such that beta(m) = tau(m)/2 + 1 where beta(m) is the number of Brazilian representations of m and tau(m) is the number of divisors of m.at n=24A326388