1049
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 1050
- 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
- 1048
- Möbius Function
- -1
- Radical
- 1049
- 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
- 62
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- yes
- Composite Number
- no
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- yes
- Prime Factorization
- no
- Twin Prime
- yes
- Mersenne Prime
- no
- Sophie Germain Prime
- yes
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 176
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Primes p == 3, 9, 11 (mod 20) such that 2p+1 is also prime.at n=18A000355
- Primes with 3 as smallest primitive root.at n=42A001123
- Primes p such that the multiplicative order of 2 modulo p is (p-1)/4.at n=7A001134
- Lesser of twin primes.at n=37A001359
- Numbers that are the sum of 6 positive 6th powers.at n=12A003362
- Numbers k such that (6^k - 1)/5 is prime.at n=8A004062
- Divisible only by primes congruent to 6 mod 7.at n=31A004624
- Numbers divisible only by primes congruent to 1 mod 8.at n=42A004625
- Sophie Germain primes p: 2p+1 is also prime.at n=40A005384
- Number of paraffins.at n=16A005999
- Primes of form 8n+1, that is, primes congruent to 1 mod 8.at n=39A007519
- Primes of form 3*k^2 - 3*k + 23.at n=18A007637
- Primes p == 1 (mod 8), p = a^2 + 64*b^2 such that y^2 = x^3 + p*x has rank 2.at n=13A007766
- Expansion of tanh(log(1+sin(x))).at n=7A009771
- Primes p == 1 mod 8 such that 2 and -2 are both 4th powers (one implies other) mod p.at n=15A014754
- Strictly non-palindromic numbers: n is not palindromic in any base b with 2 <= b <= n-2.at n=44A016038
- Expansion of 1/((1-2x)(1-3x)(1-8x)).at n=3A016277
- Powers of fourth root of 22 rounded up.at n=9A018110
- Primes with primitive root 27.at n=44A019353
- Numbers k such that the continued fraction for sqrt(k) has period 25.at n=2A020364