958
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
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 1440
- Proper Divisor Sum (Aliquot Sum)
- 482
- 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
- 478
- Möbius Function
- 1
- Radical
- 958
- 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
- 54
- Smith Number
- yes
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
- yes
- Odd
- no
Names
- German
- neunhundertachtundfünfzig· ordinal: neunhundertachtundfünfzigste
- English
- nine hundred fifty-eight· ordinal: nine hundred fifty-eighth
- Spanish
- novecientos cincuenta y ocho· ordinal: 958º
- French
- neuf cent cinquante-huit· ordinal: neuf cent cinquante-huitième
- Italian
- novecentocinquantotto· ordinal: 958º
- Latin
- nongenti quinquaginta octo· ordinal: 958.
- Portuguese
- novecentos e cinquenta e oito· ordinal: 958º
Appears in sequences
- a(1) = 1; for n>1, a(n) = a(n-1) + 1 + sum of distinct prime factors of a(n-1) that are < a(n-1).at n=43A003508
- a(n) = floor(n*phi^7), where phi is the golden ratio, A001622.at n=33A004922
- a(n) = round(n*phi^7), where phi is the golden ratio, A001622.at n=33A004942
- Smith (or joke) numbers: composite numbers k such that sum of digits of k = sum of digits of prime factors of k (counted with multiplicity).at n=47A006753
- Coordination sequence T7 for Zeolite Code MTT.at n=19A008195
- 3x+1 sequence starting at 63.at n=53A008874
- 3x+1 sequence starting at 95.at n=51A008875
- 3x+1 sequence starting at 27.at n=57A008884
- Coordination sequence T1 for Zeolite Code VNI.at n=19A009907
- Coordination sequence for FeS2-Pyrite, S position.at n=15A009956
- Partial sums of A011863.at n=8A011888
- 2^(n-1) - n*(n+1)/2.at n=10A014846
- Numbers k such that sigma(k) = sigma(k+11).at n=4A015881
- Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite GOO = Goosecreekite Ca2[Al4Si12O32].10H2O starting with a T2 atom.at n=4A019019
- Numbers k such that the continued fraction for sqrt(k) has period 36.at n=3A020375
- Index of 5^n within sequence of numbers of form 2^i * 5^j.at n=28A022334
- Convolution of natural numbers with A014306.at n=46A023544
- Numbers with exactly 8 ones in binary expansion.at n=29A023690
- Numbers whose least quadratic nonresidue (A020649) is 13.at n=1A025025
- Number of partitions of n into distinct parts >= 7.at n=68A025152