12945814 has 16 divisors (see below), whose sum is σ = 22423968. Its totient is φ = 5490432.

The previous prime is 12945811. The next prime is 12945841. The reversal of 12945814 is 41854921.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 12945814.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12945811) 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 in 7 ways as a sum of consecutive naturals, for example, 3409 + ... + 6124.

It is an arithmetic number, because the mean of its divisors is an integer number (1401498).

Almost surely, 2^12945814 is an apocalyptic number.

12945814 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12945814 is a deficient number, since it is larger than the sum of its proper divisors (9478154).

12945814 is an equidigital number, since it uses as much as digits as its factorization.

12945814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9639.

The product of its digits is 11520, while the sum is 34.

The square root of 12945814 is about 3598.0291827610. The cubic root of 12945814 is about 234.8063229948.

The spelling of 12945814 in words is "twelve million, nine hundred forty-five thousand, eight hundred fourteen".