Base | Representation |
---|---|
bin | 110001011111… |
… | …101001001101 |
3 | 220102011220022 |
4 | 301133221031 |
5 | 11310142134 |
6 | 1142031525 |
7 | 215166011 |
oct | 61375115 |
9 | 26364808 |
10 | 12974669 |
11 | 7362074 |
12 | 44185a5 |
13 | 28c3826 |
14 | 1a1a541 |
15 | 121452e |
hex | c5fa4d |
12974669 has 2 divisors, whose sum is σ = 12974670. Its totient is φ = 12974668.
The previous prime is 12974657. The next prime is 12974671. The reversal of 12974669 is 96647921.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 9954025 + 3020644 = 3155^2 + 1738^2 .
It is an emirp because it is prime and its reverse (96647921) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 12974669 - 24 = 12974653 is a prime.
It is a super-2 number, since 2×129746692 = 336684071319122, which contains 22 as substring.
Together with 12974671, 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 (12974569) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6487334 + 6487335.
It is an arithmetic number, because the mean of its divisors is an integer number (6487335).
Almost surely, 212974669 is an apocalyptic number.
It is an amenable number.
12974669 is a deficient number, since it is larger than the sum of its proper divisors (1).
12974669 is an equidigital number, since it uses as much as digits as its factorization.
12974669 is an evil number, because the sum of its binary digits is even.
The product of its digits is 163296, while the sum is 44.
The square root of 12974669 is about 3602.0367849315. The cubic root of 12974669 is about 234.9806472670.
The spelling of 12974669 in words is "twelve million, nine hundred seventy-four thousand, six hundred sixty-nine".
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