769
domain: N
Properties
Digital Properties
- Digit Count
- 3
- Digit Sum
- 22
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 5
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 770
- Proper Divisor Sum (Aliquot Sum)
- 1
- 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
- 768
- Möbius Function
- -1
- Radical
- 769
- Omega Function (Ω)
- 1
- Little Omega Function (ω)
- 1
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
- 33
- Smith Number
- no
Primality
- Prime
- yes
- Composite Number
- no
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- yes
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 136
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Names
- German
- siebenhundertneunundsechzig· ordinal: siebenhundertneunundsechzigste
- English
- seven hundred sixty-nine· ordinal: seven hundred sixty-ninth
- Spanish
- setecientos sesenta y nueve· ordinal: 769º
- French
- sept cent soixante-neuf· ordinal: sept cent soixante-neufième
- Italian
- settecentosessantanove· ordinal: 769º
- Latin
- septingenti sexaginta novem· ordinal: 769.
- Portuguese
- setecentos e sessenta e nove· ordinal: 769º
Appears in sequences
- a(n) = (n-1)*2^n + 1.at n=7A000337
- Primes p of the form 3k+1 such that Sum_{x=1..p} cos(2*Pi*x^3/p) > sqrt(p).at n=33A000921
- Primes of the form 2^q*3^r*5^s + 1.at n=32A002200
- Largest prime factor of 9^n + 1.at n=12A002592
- Glaisher's function H'(4n+1) (18 squares version).at n=7A002610
- Number of partitions of at most n into at most 5 parts.at n=18A002622
- A variant of the cuban primes: primes p = (x^3 - y^3)/(x - y) where x = y + 2.at n=4A002648
- Numbers that are the sum of 4 nonzero 4th powers.at n=37A003338
- Numbers that are the sum of 12 positive 5th powers.at n=35A003357
- Numbers that are the sum of 7 positive 7th powers.at n=6A003374
- Numbers that are the sum of 4 nonzero 8th powers.at n=3A003382
- a(0) = 1; thereafter a(n) = 3*2^(n-1) + 1.at n=9A004119
- Divisible only by primes congruent to 4 mod 5.at n=34A004618
- Divisible only by primes congruent to 6 mod 7.at n=23A004624
- Numbers divisible only by primes congruent to 1 mod 8.at n=32A004625
- Numbers that are the sum of at most 7 positive 7th powers.at n=34A004869
- Numbers that are the sum of at most 8 positive 7th powers.at n=40A004870
- Numbers that are the sum of at most 9 positive 7th powers.at n=46A004871
- Numbers that are the sum of at most 10 positive 7th powers.at n=52A004872
- Numbers that are the sum of at most 4 nonzero 8th powers.at n=13A004877