Base | Representation |
---|---|
bin | 10010100111111110… |
… | …01100100011001111 |
3 | 221210211220100002200 |
4 | 21103333030203033 |
5 | 130434221304444 |
6 | 4332105252543 |
7 | 502533116436 |
oct | 112377144317 |
9 | 27724810080 |
10 | 9999009999 |
11 | 42711a9230 |
12 | 1b30794153 |
13 | c34731984 |
14 | 6abd8611d |
15 | 3d7c64969 |
hex | 253fcc8cf |
9999009999 has 36 divisors (see below), whose sum is σ = 15915167736. Its totient is φ = 5999400000.
The previous prime is 9999009997. The next prime is 9999010057.
9999009999 is nontrivially palindromic in base 10.
It is not a de Polignac number, because 9999009999 - 21 = 9999009997 is a prime.
It is a zygodrome in base 10.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (9999009991) by changing a digit.
It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1004949 + ... + 1014849.
Almost surely, 29999009999 is an apocalyptic number.
9999009999 is a gapful number since it is divisible by the number (99) formed by its first and last digit.
9999009999 is a deficient number, since it is larger than the sum of its proper divisors (5916157737).
9999009999 is a wasteful number, since it uses less digits than its factorization.
9999009999 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10120 (or 10016 counting only the distinct ones).
The product of its (nonzero) digits is 43046721, while the sum is 72.
The square root of 9999009999 is about 99995.0498724812. The cubic root of 9999009999 is about 2154.3635912690.
It can be divided in two parts, 999900 and 9999, that multiplied together give a square (9998000100 = 999902).
The spelling of 9999009999 in words is "nine billion, nine hundred ninety-nine million, nine thousand, nine hundred ninety-nine".
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