Base | Representation |
---|---|
bin | 11111000001110100000001 |
3 | 120022020121011 |
4 | 133001310001 |
5 | 4040241024 |
6 | 450200521 |
7 | 126064651 |
oct | 37016401 |
9 | 16266534 |
10 | 8133889 |
11 | 4656125 |
12 | 2883141 |
13 | 18ba36a |
14 | 111a361 |
15 | aaa094 |
hex | 7c1d01 |
8133889 has 4 divisors (see below), whose sum is σ = 8142256. Its totient is φ = 8125524.
The previous prime is 8133883. The next prime is 8133893. The reversal of 8133889 is 9883318.
8133889 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9883318 = 2 ⋅4941659.
It is a cyclic number.
It is not a de Polignac number, because 8133889 - 213 = 8125697 is a prime.
It is a Duffinian number.
8133889 is a lucky number.
It is not an unprimeable number, because it can be changed into a prime (8133883) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2499 + ... + 4744.
It is an arithmetic number, because the mean of its divisors is an integer number (2035564).
Almost surely, 28133889 is an apocalyptic number.
It is an amenable number.
8133889 is a deficient number, since it is larger than the sum of its proper divisors (8367).
8133889 is a wasteful number, since it uses less digits than its factorization.
8133889 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8366.
The product of its digits is 41472, while the sum is 40.
The square root of 8133889 is about 2851.9973702653. The cubic root of 8133889 is about 201.1095745049.
The spelling of 8133889 in words is "eight million, one hundred thirty-three thousand, eight hundred eighty-nine".
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