Base | Representation |
---|---|
bin | 1110011100011… |
… | …00000100110101 |
3 | 22102222120021000 |
4 | 13032030010311 |
5 | 222004104424 |
6 | 20004513513 |
7 | 3000562056 |
oct | 716140465 |
9 | 272876230 |
10 | 121159989 |
11 | 62434325 |
12 | 346ab899 |
13 | 1c141c02 |
14 | 1213c72d |
15 | a9843c9 |
hex | 738c135 |
121159989 has 8 divisors (see below), whose sum is σ = 179496320. Its totient is φ = 80773308.
The previous prime is 121159967. The next prime is 121159991. The reversal of 121159989 is 989951121.
It is not a de Polignac number, because 121159989 - 27 = 121159861 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (121159949) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is an upside-down number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2243677 + ... + 2243730.
It is an arithmetic number, because the mean of its divisors is an integer number (22437040).
Almost surely, 2121159989 is an apocalyptic number.
It is an amenable number.
121159989 is a deficient number, since it is larger than the sum of its proper divisors (58336331).
121159989 is an equidigital number, since it uses as much as digits as its factorization.
121159989 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4487416 (or 4487410 counting only the distinct ones).
The product of its digits is 58320, while the sum is 45.
The square root of 121159989 is about 11007.2698249839. The cubic root of 121159989 is about 494.8266426921.
The spelling of 121159989 in words is "one hundred twenty-one million, one hundred fifty-nine thousand, nine hundred eighty-nine".
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