395
domain: N
Properties
Digital Properties
- Digit Count
- 3
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 480
- Proper Divisor Sum (Aliquot Sum)
- 85
- 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
- 312
- Möbius Function
- 1
- Radical
- 395
- 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
- 76
- 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
- dreihundertfünfundneunzig· ordinal: dreihundertfünfundneunzigste
- English
- three hundred ninety-five· ordinal: three hundred ninety-fifth
- Spanish
- trescientos noventa y cinco· ordinal: 395º
- French
- trois cent quatre-vingt-quinze· ordinal: trois cent quatre-vingt-quinzième
- Italian
- trecentonovantacinque· ordinal: 395º
- Latin
- trecenti nonaginta quinque· ordinal: 395.
- Portuguese
- trezentos e noventa e cinco· ordinal: 395º
Appears in sequences
- Primes multiplied by 5.at n=21A001750
- Numbers k such that 19*2^k - 1 is prime.at n=13A001775
- Number of partitions with no even part repeated; partitions of n in which no parts are multiples of 4.at n=21A001935
- Number of (unordered, unlabeled) rooted trimmed trees with n nodes.at n=10A002955
- Inconsummate numbers in base 10: no number is this multiple of the sum of its digits (in base 10).at n=22A003635
- a(n) = 3*n^2 + 3*n - 1.at n=11A004538
- Numbers whose binary expansion ends in 011.at n=48A004769
- a(n) = round(n*phi^6), where phi is the golden ratio, A001622.at n=22A004941
- a(n) = ceiling(n*phi^6), where phi is the golden ratio.at n=22A004961
- States of a dynamic storage system.at n=9A005595
- Sorting numbers: number of comparisons in Batcher's parallel sort.at n=49A006282
- a(n) = a(n-1) + 2*a(n-2) + (-1)^n.at n=9A006904
- Oscillates under partition transform.at n=22A007211
- Knopfmacher expansion of 2/3: a(n+1) = a(n-1)(a(n)+1)-1.at n=5A007568
- Coordination sequence T2 for Zeolite Code AEI.at n=15A008002
- Coordination sequence T3 for Zeolite Code AEI.at n=15A008003
- Coordination sequence T2 for Zeolite Code AFO.at n=13A008016
- Coordination sequence T5 for Zeolite Code BOG.at n=14A008053
- Coordination sequence T8 for Zeolite Code EUO.at n=12A008103
- Coordination sequence T3 for Zeolite Code LAU.at n=14A008126