495
domain: N
Properties
Digital Properties
- Digit Count
- 3
- 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
- 936
- Proper Divisor Sum (Aliquot Sum)
- 441
- 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
- 240
- Möbius Function
- 0
- Radical
- 165
- 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
- 97
- Smith 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
Names
- German
- vierhundertfünfundneunzig· ordinal: vierhundertfünfundneunzigste
- English
- four hundred ninety-five· ordinal: four hundred ninety-fifth
- Spanish
- cuatrocientos noventa y cinco· ordinal: 495º
- French
- quatre cent quatre-vingt-quinze· ordinal: quatre cent quatre-vingt-quinzième
- Italian
- quattrocentonovantacinque· ordinal: 495º
- Latin
- quadringenti nonaginta quinque· ordinal: 495.
- Portuguese
- quatrocentos e noventa e cinco· ordinal: 495º
Appears in sequences
- a(n) = n*(n+3)/2.at n=30A000096
- Binomial coefficient binomial(n,4) = n*(n-1)*(n-2)*(n-3)/24.at n=12A000332
- a(n) = binomial coefficient C(n,8).at n=4A000581
- Number of 2n-bead balanced binary necklaces of fundamental period 2n, equivalent to reversed complement; also Dirichlet convolution of b_n=2^(n-1) with mu(n); also number of components of Mandelbrot set corresponding to Julia sets with an attractive n-cycle.at n=9A000740
- Number of compositions of n into 5 ordered relatively prime parts.at n=8A000743
- Expansion of g.f. (1 + x + 2*x^2)/((1 - x)^2*(1 - x^3)).at n=26A000969
- Number of ways of partitioning n points on a circle into subsets only of sizes 2 and 3.at n=11A001005
- Numbers k such that phi(k) = phi(k+1).at n=7A001274
- Generalized pentagonal numbers: m*(3*m - 1)/2, m = 0, +-1, +-2, +-3, ....at n=36A001318
- The coding-theoretic function A(n,4,3).at n=54A001839
- Expansion of g.f. x/((1 - x)^2*(1 - x^3)).at n=53A001840
- Binomial coefficients C(2n, n-2).at n=4A002694
- a(n) = A001950(A003234(n)) + 1.at n=51A003249
- Numbers k such that the multiplicative group of residues prime to k, M_k, is isomorphic to M_{k+1}.at n=4A003276
- Numbers that are the sum of 11 positive 5th powers.at n=20A003356
- Number of nonequivalent dissections of an n-gon into 3 polygons by nonintersecting diagonals up to rotation and reflection.at n=19A003453
- Triangle of denominators in Leibniz's Harmonic Triangle a(n,k), n >= 1, 1 <= k <= n.at n=57A003506
- Triangle of denominators in Leibniz's Harmonic Triangle a(n,k), n >= 1, 1 <= k <= n.at n=63A003506
- Degrees of irreducible representations of alternating group A_13.at n=11A003868
- Degrees of irreducible representations of symmetric group S_13.at n=18A003877