Base | Representation |
---|---|
bin | 11010100110001111100101 |
3 | 111010020022122 |
4 | 122212033211 |
5 | 3241104024 |
6 | 405235325 |
7 | 113156444 |
oct | 32461745 |
9 | 14106278 |
10 | 6972389 |
11 | 3a32506 |
12 | 2402b45 |
13 | 15a1798 |
14 | cd6d5b |
15 | 92ad5e |
hex | 6a63e5 |
6972389 has 2 divisors, whose sum is σ = 6972390. Its totient is φ = 6972388.
The previous prime is 6972359. The next prime is 6972401. The reversal of 6972389 is 9832796.
6972389 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 6543364 + 429025 = 2558^2 + 655^2 .
It is a cyclic number.
It is not a de Polignac number, because 6972389 - 216 = 6906853 is a prime.
It is a super-2 number, since 2×69723892 = 97228416734642, which contains 22 as substring.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (6972319) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3486194 + 3486195.
It is an arithmetic number, because the mean of its divisors is an integer number (3486195).
Almost surely, 26972389 is an apocalyptic number.
It is an amenable number.
6972389 is a deficient number, since it is larger than the sum of its proper divisors (1).
6972389 is an equidigital number, since it uses as much as digits as its factorization.
6972389 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 163296, while the sum is 44.
The square root of 6972389 is about 2640.5281668636. The cubic root of 6972389 is about 191.0412728439.
The spelling of 6972389 in words is "six million, nine hundred seventy-two thousand, three hundred eighty-nine".
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