12999307 has 4 divisors (see below), whose sum is σ = 13275936. Its totient is φ = 12722680.

The previous prime is 12999289. The next prime is 12999313. The reversal of 12999307 is 70399921.

12999307 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 12999307 - 2⁷ = 12999179 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12999307.

It is not an unprimeable number, because it can be changed into a prime (12999367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138244 + ... + 138337.

It is an arithmetic number, because the mean of its divisors is an integer number (3318984).

Almost surely, 2^12999307 is an apocalyptic number.

12999307 is a deficient number, since it is larger than the sum of its proper divisors (276629).

12999307 is an equidigital number, since it uses as much as digits as its factorization.

12999307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276628.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 12999307 is about 3605.4551723742. The cubic root of 12999307 is about 235.1292905570.

The spelling of 12999307 in words is "twelve million, nine hundred ninety-nine thousand, three hundred seven".