12940307 has 4 divisors (see below), whose sum is σ = 12966240. Its totient is φ = 12914376.

The previous prime is 12940289. The next prime is 12940309. The reversal of 12940307 is 70304921.

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

It is a cyclic number.

It is not a de Polignac number, because 12940307 - 2⁶ = 12940243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12940309) 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 3 ways as a sum of consecutive naturals, for example, 12203 + ... + 13220.

It is an arithmetic number, because the mean of its divisors is an integer number (3241560).

Almost surely, 2^12940307 is an apocalyptic number.

12940307 is a deficient number, since it is larger than the sum of its proper divisors (25933).

12940307 is an equidigital number, since it uses as much as digits as its factorization.

12940307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25932.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 12940307 is about 3597.2638212953. The cubic root of 12940307 is about 234.7730236385.

The spelling of 12940307 in words is "twelve million, nine hundred forty thousand, three hundred seven".