Base | Representation |
---|---|
bin | 10111011100001… |
… | …001001111110001 |
3 | 1000101222100220021 |
4 | 113130021033301 |
5 | 1301133110443 |
6 | 103004443441 |
7 | 12513413515 |
oct | 2734111761 |
9 | 1011870807 |
10 | 393253873 |
11 | 191a88501 |
12 | ab849581 |
13 | 6361bacc |
14 | 3a32a145 |
15 | 247ce9ed |
hex | 177093f1 |
393253873 has 2 divisors, whose sum is σ = 393253874. Its totient is φ = 393253872.
The previous prime is 393253867. The next prime is 393253901. The reversal of 393253873 is 378352393.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 356190129 + 37063744 = 18873^2 + 6088^2 .
It is an emirp because it is prime and its reverse (378352393) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 393253873 - 213 = 393245681 is a prime.
It is not a weakly prime, because it can be changed into another prime (393253823) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196626936 + 196626937.
It is an arithmetic number, because the mean of its divisors is an integer number (196626937).
Almost surely, 2393253873 is an apocalyptic number.
It is an amenable number.
393253873 is a deficient number, since it is larger than the sum of its proper divisors (1).
393253873 is an equidigital number, since it uses as much as digits as its factorization.
393253873 is an evil number, because the sum of its binary digits is even.
The product of its digits is 408240, while the sum is 43.
The square root of 393253873 is about 19830.6296672597. The cubic root of 393253873 is about 732.6406354005.
The spelling of 393253873 in words is "three hundred ninety-three million, two hundred fifty-three thousand, eight hundred seventy-three".
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