12949786 has 4 divisors (see below), whose sum is σ = 19424682. Its totient is φ = 6474892.

The previous prime is 12949691. The next prime is 12949787. The reversal of 12949786 is 68794921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9641025 + 3308761 = 3105^2 + 1819^2 .

It is not an unprimeable number, because it can be changed into a prime (12949787) 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, 3237445 + ... + 3237448.

Almost surely, 2^12949786 is an apocalyptic number.

12949786 is a deficient number, since it is larger than the sum of its proper divisors (6474896).

12949786 is an equidigital number, since it uses as much as digits as its factorization.

12949786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6474895.

The product of its digits is 217728, while the sum is 46.

The square root of 12949786 is about 3598.5811092707. The cubic root of 12949786 is about 234.8303347551.

The spelling of 12949786 in words is "twelve million, nine hundred forty-nine thousand, seven hundred eighty-six".