799
domain: N
Properties
Digital Properties
- Digit Count
- 3
- Digit Sum
- 25
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 864
- Proper Divisor Sum (Aliquot Sum)
- 65
- 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
- 736
- Möbius Function
- 1
- Radical
- 799
- 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
- 72
- 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
- siebenhundertneunundneunzig· ordinal: siebenhundertneunundneunzigste
- English
- seven hundred ninety-nine· ordinal: seven hundred ninety-ninth
- Spanish
- setecientos noventa y nueve· ordinal: 799º
- French
- sept cent quatre-vingt-dix-neuf· ordinal: sept cent quatre-vingt-dix-neufième
- Italian
- settecentonovantanove· ordinal: 799º
- Latin
- septingenti nonaginta novem· ordinal: 799.
- Portuguese
- setecentos e noventa e nove· ordinal: 799º
Appears in sequences
- Number of symmetric filaments (strip polyominoes) with n square cells.at n=17A002014
- Numbers that are the sum of 11 positive 5th powers.at n=35A003356
- Numbers that are the sum of 8 positive 6th powers.at n=10A003364
- Least positive integer k such that the fractional part of k*sqrt(5) has its n initial partial quotients all equal to 1.at n=6A004794
- a(n) = round(n*phi^8), where phi is the golden ratio, A001622.at n=17A004943
- a(n) = ceiling(n*phi^8), where phi is the golden ratio, A001622.at n=17A004963
- a(n) = (n + 3)*(n^2 + 6*n + 2)/6.at n=14A005286
- a(n) = ceiling((1 + sum of preceding terms) / 2) starting with a(0) = 1.at n=17A005428
- From expansion of falling factorials.at n=5A005492
- Number of paraffins.at n=14A005998
- Number of partitions of n into Fibonacci parts (with 2 types of 1).at n=20A007000
- Primitive modest numbers.at n=31A007627
- Tower of Hanoi with 5 pegs.at n=48A007665
- Composite but smallest prime factor >= 17.at n=17A008367
- Multiples of 17.at n=47A008599
- Expansion of (1+x^5)/((1-x)*(1-x^2)*(1-x^3)*(1-x^4)).at n=36A008766
- Numbers k such that the periodic part of the continued fraction for sqrt(k) contains a single 1.at n=31A013648
- Composite numbers that are equal to the sum of the first k composites for some k.at n=26A013921
- Iccanobif numbers: add reversal of a(n-1) to a(n-2).at n=15A014259
- Numbers k such that phi(k) | sigma_11(k).at n=36A015769