Base | Representation |
---|---|
bin | 10010100100010001… |
… | …11101001010100101 |
3 | 221201200120120120022 |
4 | 21102020331022211 |
5 | 130403302421424 |
6 | 4325041044525 |
7 | 502005502163 |
oct | 112210751245 |
9 | 27650516508 |
10 | 9968013989 |
11 | 425575849a |
12 | 1b22326745 |
13 | c2b19b53b |
14 | 6a7bd8233 |
15 | 3d519095e |
hex | 25223d2a5 |
9968013989 has 2 divisors, whose sum is σ = 9968013990. Its totient is φ = 9968013988.
The previous prime is 9968013983. The next prime is 9968014031. The reversal of 9968013989 is 9893108699.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 5090109025 + 4877904964 = 71345^2 + 69842^2 .
It is an emirp because it is prime and its reverse (9893108699) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-9968013989 is a prime.
It is a super-2 number, since 2×99680139892 (a number of 21 digits) contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (9968013983) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4984006994 + 4984006995.
It is an arithmetic number, because the mean of its divisors is an integer number (4984006995).
Almost surely, 29968013989 is an apocalyptic number.
It is an amenable number.
9968013989 is a deficient number, since it is larger than the sum of its proper divisors (1).
9968013989 is an equidigital number, since it uses as much as digits as its factorization.
9968013989 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 7558272, while the sum is 62.
The square root of 9968013989 is about 99839.9418519462. The cubic root of 9968013989 is about 2152.1351774888.
The spelling of 9968013989 in words is "nine billion, nine hundred sixty-eight million, thirteen thousand, nine hundred eighty-nine".
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