Base | Representation |
---|---|
bin | 111010111100101… |
… | …111000011010001 |
3 | 2112220222101210112 |
4 | 322330233003101 |
5 | 4011140444024 |
6 | 242045411105 |
7 | 33336234413 |
oct | 7274570321 |
9 | 2486871715 |
10 | 988999889 |
11 | 4682a0289 |
12 | 237269a95 |
13 | 129b88347 |
14 | 954c69b3 |
15 | 5bc5c00e |
hex | 3af2f0d1 |
988999889 has 2 divisors, whose sum is σ = 988999890. Its totient is φ = 988999888.
The previous prime is 988999883. The next prime is 988999903.
988999889 is nontrivially palindromic in base 10.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 861129025 + 127870864 = 29345^2 + 11308^2 .
It is a palprime.
It is a cyclic number.
It is not a de Polignac number, because 988999889 - 228 = 720564433 is a prime.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (988999883) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494499944 + 494499945.
It is an arithmetic number, because the mean of its divisors is an integer number (494499945).
Almost surely, 2988999889 is an apocalyptic number.
It is an amenable number.
988999889 is a deficient number, since it is larger than the sum of its proper divisors (1).
988999889 is an equidigital number, since it uses as much as digits as its factorization.
988999889 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 241864704, while the sum is 77.
The square root of 988999889 is about 31448.3686222354. The cubic root of 988999889 is about 996.3197688471.
The spelling of 988999889 in words is "nine hundred eighty-eight million, nine hundred ninety-nine thousand, eight hundred eighty-nine".
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