12966491 has 2 divisors, whose sum is σ = 12966492. Its totient is φ = 12966490.

The previous prime is 12966469. The next prime is 12966497. The reversal of 12966491 is 19466921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12966491 - 2¹⁸ = 12704347 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12966497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6483245 + 6483246.

It is an arithmetic number, because the mean of its divisors is an integer number (6483246).

Almost surely, 2^12966491 is an apocalyptic number.

12966491 is a deficient number, since it is larger than the sum of its proper divisors (1).

12966491 is an equidigital number, since it uses as much as digits as its factorization.

12966491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 38.

The square root of 12966491 is about 3600.9014149238. The cubic root of 12966491 is about 234.9312670575.

The spelling of 12966491 in words is "twelve million, nine hundred sixty-six thousand, four hundred ninety-one".