12866369 has 2 divisors, whose sum is σ = 12866370. Its totient is φ = 12866368.

The previous prime is 12866353. The next prime is 12866377. The reversal of 12866369 is 96366821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9535744 + 3330625 = 3088^2 + 1825^2 .

It is a cyclic number.

It is not a de Polignac number, because 12866369 - 2⁴ = 12866353 is a prime.

It is a super-2 number, since 2×12866369² = 331086902488322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12866309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6433184 + 6433185.

It is an arithmetic number, because the mean of its divisors is an integer number (6433185).

Almost surely, 2^12866369 is an apocalyptic number.

It is an amenable number.

12866369 is a deficient number, since it is larger than the sum of its proper divisors (1).

12866369 is an equidigital number, since it uses as much as digits as its factorization.

12866369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 41.

The square root of 12866369 is about 3586.9721214417. The cubic root of 12866369 is about 234.3250225645.

The spelling of 12866369 in words is "twelve million, eight hundred sixty-six thousand, three hundred sixty-nine".