12949691 has 2 divisors, whose sum is σ = 12949692. Its totient is φ = 12949690.

The previous prime is 12949679. The next prime is 12949787. The reversal of 12949691 is 19694921.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (19694921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12949691 - 2⁶ = 12949627 is a prime.

It is not a weakly prime, because it can be changed into another prime (12942691) 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, 6474845 + 6474846.

It is an arithmetic number, because the mean of its divisors is an integer number (6474846).

Almost surely, 2^12949691 is an apocalyptic number.

12949691 is a deficient number, since it is larger than the sum of its proper divisors (1).

12949691 is an equidigital number, since it uses as much as digits as its factorization.

12949691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 41.

The square root of 12949691 is about 3598.5679095996. The cubic root of 12949691 is about 234.8297605130.

The spelling of 12949691 in words is "twelve million, nine hundred forty-nine thousand, six hundred ninety-one".