987990985 is an odd 9-digits composite number following 987990984
and preceding 987990986 . In scientific notation, it is written as 9.87990985 × 10^8.
The sum of its digits is 64. It has a total of 2 prime factors and 4 positive divisors.
There are 780387504 positive integers (up to 987990985) that are relatively prime to 987990985.
987990985 has 4 divisors, whose sum is 990492624
The reverse of 987990985 is 589099789
Previous prime number is 395
Is Prime? no Number parity odd Number length 9 Sum of Digits 64 Digital Root 1
Name
nine hundred eighty-seven million nine hundred ninety thousand nine hundred eighty-five
Scientific notation
9.87990985 × 10^8
Engineering notation
9.87990985 × 10^6
Prime Factorization
395 × 2501243
Composite number
ω Distinct Factors
2 Total number of distinct prime factors
Ω Total Factors
2 Total number of prime factors
rad Radical
987990985 Product of the distinct prime numbers
The prime factorization of 987990985 is 395 × 2501243.
Since it has a total of 2 prime factors.
7 , 1 , 97 , 22 , 695 , 428 , 1698 , 427 , 72959 , 67947 , 357376 , 802173 , 9800437 , 5210735 , 72200636 , 6361369 , 405549560 , 119337455 , 2156480099 , 842815365
n×2
1975981970
n×3
2963972955
n×4
3951963940
n×5
4939954925
n÷2
493995492.5
n÷3
329330328.33333
n÷3
246997746.25
n÷5
197598197
n2
976126186441270225
n3
9.644038724264E+26
n4
9.5282233185638E+35
n5
9.4137987418078E+44
2 √n31432.323887998
3 √n995.98086318021
4 √n177.29163513262
5 √n62.943457678637
4 divisors
τ Total Divisors
4 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-987990984 Sum of the proper positive divisors of n
A Arithmetic Mean
0.25 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
1 Returns the nth root of the product of n divisors
H Harmonic Mean
4 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 987990985 can be divided by 4 positive divisors.
The sum of these divisors (counting 987990985) is 1, the average is 0.25.
Base
System
Value
2
Binary
111010111000111000101111001001
3
Ternary
2112212002010211201
4
Quaternary
322320320233021
5
Quinary
4010411202420
6
Senary
242012024201
8
Octal
7270705711
10
Decimal
987990985
12
Duodecimal
236a62061
16
Hexadecimal
3ae38bc9
20
Vigesimal
f8eih95
36
Base36
gc82q1
md5
7212d2ff122cf38b19208923b846b18e
sha1
91d754be6557deff35f6276570a3211de4f7d9ef
sha256
23d635f1951e70a1457077853f5332d5e2bf4eab6b08c3e3ab2eb0770c8f2df4
sha512
0bd435b8892053db8611923d2241f1f153b93c163ac857e22773c7f0d5f561e0871116ccbab714cf8351775cbb1e133f57fc849454c15d548881fea492f41871
ripemd-160
cfd604cf13005453f28a07f6b6cb0bb038de892d
Diameter
1975981970
Circumference
6207730440.5779
Area
3.0665908563005E+18
Volume
4.0396854942778E+27
Surface area
1.2266363425202E+19
Circumference
6207730440.5779
Perimeter
3951963940
Area
976126186441270225
Diagonal
1397230250.4894
Surface area
5856757118647621350
Volume
9.644038724264E+26
Space diagonal
1711250583.44
Perimeter
2963972955
Area
4.2267503737868E+17
Altitude
855625291.72001
Surface area
4.2267503737868E+17
Volume
1.1365608633255E+26
Height
465743416.82978