12807958 has 4 divisors (see below), whose sum is σ = 19211940. Its totient is φ = 6403978.

The previous prime is 12807943. The next prime is 12807959. The reversal of 12807958 is 85970821.

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

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 self number, because there is not a number n which added to its sum of digits gives 12807958.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12807959) 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, 3201988 + ... + 3201991.

It is an arithmetic number, because the mean of its divisors is an integer number (4802985).

Almost surely, 2^12807958 is an apocalyptic number.

12807958 is a deficient number, since it is larger than the sum of its proper divisors (6403982).

12807958 is an equidigital number, since it uses as much as digits as its factorization.

12807958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6403981.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 12807958 is about 3578.8207555003. The cubic root of 12807958 is about 233.9698867914.

The spelling of 12807958 in words is "twelve million, eight hundred seven thousand, nine hundred fifty-eight".