1413
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 9
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 2054
- Proper Divisor Sum (Aliquot Sum)
- 641
- 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
- 936
- Möbius Function
- 0
- Radical
- 471
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 2
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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 127
- 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
- a(n) = floor(n(n+2)(2n+1)/8).at n=17A002717
- a(n) = number of special even permutations of 2*n+1.at n=4A003109
- Primes written in base 5.at n=50A004679
- Fibonacci numbers written in base 5.at n=13A004688
- a(n) = 3 + n/2 + 7*n^2/2.at n=20A006124
- Coordination sequence T3 for Zeolite Code MEL.at n=24A008152
- Expansion of 1/((1-x)*(1-x^3)*(1-x^5)*(1-x^7)*(1-x^9)).at n=63A008674
- Expansion of (1+x^12)/((1-x)*(1-x^2)*(1-x^3)*(1-x^4)).at n=47A008773
- Let j = | i - i_written_backwards |, k = j + j_written_backwards; then k is in this sequence.at n=17A008920
- Expansion of log(1+x)*cosh(tanh(x)).at n=7A009415
- Coordination sequence T1 for Zeolite Code -WEN.at n=27A009862
- Coordination sequence T1 for Zeolite Code iRON.at n=26A009881
- Coordination sequence for alpha-Mn, Position Mn2.at n=10A009951
- [ n(n-1)(n-2)(n-3)/17 ].at n=14A011927
- Expansion of 1/(1-x^2-x^3-x^4-x^5-x^6-x^7-x^8).at n=18A013985
- Positive integers n such that 2^n (mod n) == 2^9 (mod n).at n=62A015931
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite CON = CIT-1 H2[B2Si54O112] starting with a T6 atom.at n=10A019096
- Pseudoprimes to base 28.at n=14A020156
- Numbers k such that the continued fraction for sqrt(k) has period 30.at n=12A020369
- Expansion of Product_{m>=1} (1+m*q^m)^-18.at n=4A022710