Base | Representation |
---|---|
bin | 100110000110… |
… | …100001110101 |
3 | 200210110020211 |
4 | 212012201311 |
5 | 10024110323 |
6 | 554025421 |
7 | 150620104 |
oct | 46064165 |
9 | 20713224 |
10 | 9988213 |
11 | 5702324 |
12 | 3418271 |
13 | 20b93b1 |
14 | 148003b |
15 | d2470d |
hex | 986875 |
9988213 has 2 divisors, whose sum is σ = 9988214. Its totient is φ = 9988212.
The previous prime is 9988211. The next prime is 9988229. The reversal of 9988213 is 3128899.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 9253764 + 734449 = 3042^2 + 857^2 .
It is a cyclic number.
It is not a de Polignac number, because 9988213 - 21 = 9988211 is a prime.
Together with 9988211, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (9988211) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4994106 + 4994107.
It is an arithmetic number, because the mean of its divisors is an integer number (4994107).
Almost surely, 29988213 is an apocalyptic number.
It is an amenable number.
9988213 is a deficient number, since it is larger than the sum of its proper divisors (1).
9988213 is an equidigital number, since it uses as much as digits as its factorization.
9988213 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 31104, while the sum is 40.
The square root of 9988213 is about 3160.4134223231. The cubic root of 9988213 is about 215.3587879843.
It can be divided in two parts, 99882 and 13, that multiplied together give a triangular number (1298466 = T1611).
The spelling of 9988213 in words is "nine million, nine hundred eighty-eight thousand, two hundred thirteen".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.068 sec. • engine limits •