929
domain: N
Properties
Digital Properties
- Digit Count
- 3
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- yes
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 930
- 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
- 928
- Möbius Function
- -1
- Radical
- 929
- 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
- 129
- 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
- 158
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Names
- German
- neunhundertneunundzwanzig· ordinal: neunhundertneunundzwanzigste
- English
- nine hundred twenty-nine· ordinal: nine hundred twenty-ninth
- Spanish
- novecientos veintinueve· ordinal: 929º
- French
- neuf cent vingt-neuf· ordinal: neuf cent vingt-neufième
- Italian
- novecentoventinove· ordinal: 929º
- Latin
- nongenti viginti novem· ordinal: 929.
- Portuguese
- novecentos e vinte e nove· ordinal: 929º
Appears in sequences
- Irregular primes: primes p such that at least one of the numerators of the Bernoulli numbers B_2, B_4, ..., B_{p-3} (A000367) is divisible by p.at n=61A000928
- Numbers beginning with letter 'n' in English.at n=41A000981
- Primes with 3 as smallest primitive root.at n=37A001123
- Cyclic numbers: 10 is a quadratic residue modulo p and class of mantissa is 2.at n=51A001914
- Primes of the form k^2 - k - 1.at n=18A002327
- Palindromic primes: prime numbers whose decimal expansion is a palindrome.at n=19A002385
- Largest prime factor of product of first n primes - 1, or 1 if no such prime exists.at n=7A002584
- The square sieve.at n=54A002960
- Primes p with a Fibonacci primitive root g, i.e., such that g^2 = g + 1 (mod p).at n=44A003147
- Numbers that are the sum of 12 positive 6th powers.at n=16A003368
- Numbers k such that (5^k - 1)/4 is prime.at n=9A004061
- Divisible only by primes congruent to 4 mod 5.at n=41A004618
- Divisible only by primes congruent to 5 mod 7.at n=41A004623
- Numbers divisible only by primes congruent to 1 mod 8.at n=36A004625
- a(n) = floor(n*phi^7), where phi is the golden ratio, A001622.at n=32A004922
- a(n) = round(n*phi^7), where phi is the golden ratio, A001622.at n=32A004942
- Class 3- primes (for definition see A005109).at n=48A005111
- Smallest number that requires n iterations of the bi-unitary totient function (A116550) to reach 1.at n=26A005424
- Prime self (or Colombian) numbers: primes not expressible as the sum of an integer and its digit sum.at n=20A006378
- Where the prime race among 7k+1, ..., 7k+6 changes leader.at n=6A007354