Base | Representation |
---|---|
bin | 10000000011110011001101 |
3 | 21220212212002 |
4 | 100003303031 |
5 | 2034203434 |
6 | 230122045 |
7 | 50532446 |
oct | 20036315 |
9 | 7825762 |
10 | 4209869 |
11 | 2415a34 |
12 | 14b0325 |
13 | b45261 |
14 | 7b82cd |
15 | 58257e |
hex | 403ccd |
4209869 has 2 divisors, whose sum is σ = 4209870. Its totient is φ = 4209868.
The previous prime is 4209859. The next prime is 4209871. The reversal of 4209869 is 9689024.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 4141225 + 68644 = 2035^2 + 262^2 .
It is a cyclic number.
It is not a de Polignac number, because 4209869 - 24 = 4209853 is a prime.
It is a super-2 number, since 2×42098692 = 35445993994322, which contains 22 as substring.
Together with 4209871, it forms a pair of twin primes.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (4209809) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2104934 + 2104935.
It is an arithmetic number, because the mean of its divisors is an integer number (2104935).
Almost surely, 24209869 is an apocalyptic number.
It is an amenable number.
4209869 is a deficient number, since it is larger than the sum of its proper divisors (1).
4209869 is an equidigital number, since it uses as much as digits as its factorization.
4209869 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 31104, while the sum is 38.
The square root of 4209869 is about 2051.7965298733. The cubic root of 4209869 is about 161.4691381887.
The spelling of 4209869 in words is "four million, two hundred nine thousand, eight hundred sixty-nine".
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