12717869 has 2 divisors, whose sum is σ = 12717870. Its totient is φ = 12717868.

The previous prime is 12717857. The next prime is 12717877. The reversal of 12717869 is 96871721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7496644 + 5221225 = 2738^2 + 2285^2 .

It is a cyclic number.

It is not a de Polignac number, because 12717869 - 2⁸ = 12717613 is a prime.

It is a super-2 number, since 2×12717869² = 323488383802322, 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 (12717889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6358934 + 6358935.

It is an arithmetic number, because the mean of its divisors is an integer number (6358935).

Almost surely, 2^12717869 is an apocalyptic number.

It is an amenable number.

12717869 is a deficient number, since it is larger than the sum of its proper divisors (1).

12717869 is an equidigital number, since it uses as much as digits as its factorization.

12717869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 41.

The square root of 12717869 is about 3566.2121361467. The cubic root of 12717869 is about 233.4200274223.

The spelling of 12717869 in words is "twelve million, seven hundred seventeen thousand, eight hundred sixty-nine".