Base | Representation |
---|---|
bin | 111011000000001… |
… | …100000011010111 |
3 | 2112222200101112021 |
4 | 323000030003113 |
5 | 4011403430421 |
6 | 242121034011 |
7 | 33350024506 |
oct | 7300140327 |
9 | 2488611467 |
10 | 989905111 |
11 | 4688593a8 |
12 | 237625907 |
13 | 12a114390 |
14 | 9568083d |
15 | 5bd8a341 |
hex | 3b00c0d7 |
989905111 has 16 divisors (see below), whose sum is σ = 1160863200. Its totient is φ = 835809408.
The previous prime is 989905099. The next prime is 989905139. The reversal of 989905111 is 111509989.
It is a cyclic number.
It is not a de Polignac number, because 989905111 - 27 = 989904983 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 (989905171) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61936 + ... + 76261.
It is an arithmetic number, because the mean of its divisors is an integer number (72553950).
Almost surely, 2989905111 is an apocalyptic number.
989905111 is a deficient number, since it is larger than the sum of its proper divisors (170958089).
989905111 is a wasteful number, since it uses less digits than its factorization.
989905111 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 138258.
The product of its (nonzero) digits is 29160, while the sum is 43.
The square root of 989905111 is about 31462.7575237772. The cubic root of 989905111 is about 996.6236500911.
The spelling of 989905111 in words is "nine hundred eighty-nine million, nine hundred five thousand, one hundred eleven".
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