299
domain: N
Properties
Digital Properties
- Digit Count
- 3
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 336
- Proper Divisor Sum (Aliquot Sum)
- 37
- 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
- 264
- Möbius Function
- 1
- Radical
- 299
- Omega Function (Ω)
- 2
- 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
- no
- Narcissistic Number
- no
- Collatz Steps
- 117
- Smith Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- Squarefree Number
- yes
- 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
- zweihundertneunundneunzig· ordinal: zweihundertneunundneunzigste
- English
- two hundred ninety-nine· ordinal: two hundred ninety-ninth
- Spanish
- doscientos noventa y nueve· ordinal: 299º
- French
- deux cent quatre-vingt-dix-neuf· ordinal: deux cent quatre-vingt-dix-neufième
- Italian
- duecentonovantanove· ordinal: 299º
- Latin
- ducenti nonaginta novem· ordinal: 299.
- Portuguese
- duzentos e noventa e nove· ordinal: 299º
Appears in sequences
- Number of integers <= 2^n of form x^2 - 2y^2.at n=10A000047
- a(n) = n*(n+3)/2.at n=23A000096
- Cake numbers: maximal number of pieces resulting from n planar cuts through a cube (or cake): C(n+1,3) + n + 1.at n=12A000125
- Number of n-node unlabeled connected graphs with one cycle of length 3.at n=7A000226
- Numbers k such that sum of squares of k consecutive integers >= 1 is a square.at n=33A001032
- a(n) = (12*n+1)*(12*n+11).at n=1A001538
- Expansion of e.g.f. exp(-x)/(1-4*x).at n=3A001907
- Numbers dividing A002037(i) and larger than A002037(i-1), for some i>0.at n=26A002038
- Prime numbers of measurement.at n=16A002049
- Numbers k for which the rank of the elliptic curve y^2 = x^3 - k is 2.at n=41A002154
- Numbers y such that p^2 = x^2 + y^2, 0 < x < y, p = A002144(n).at n=32A002365
- Inverse of reduced totient function.at n=50A002396
- Odd squarefree numbers with an even number of prime factors that have no prime factors greater than 31.at n=31A002557
- Numbers k such that (k^2 + 1)/2 is prime.at n=47A002731
- Numbers k such that 4*k^2 + 9 is prime.at n=55A002970
- Self numbers or Colombian numbers (numbers that are not of the form m + sum of digits of m for any m).at n=32A003052
- Number of partitions of n into parts 5k+1 or 5k+4.at n=38A003114
- Degrees of irreducible representations of Conway group Co1.at n=2A003903
- a(n) = floor(100*log(n)).at n=19A004237
- Divisible only by primes congruent to 3 mod 5.at n=31A004617