12506799 has 4 divisors (see below), whose sum is σ = 16675736. Its totient is φ = 8337864.

The previous prime is 12506783. The next prime is 12506821. The reversal of 12506799 is 99760521.

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

It is not a de Polignac number, because 12506799 - 2⁴ = 12506783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12506759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2084464 + ... + 2084469.

It is an arithmetic number, because the mean of its divisors is an integer number (4168934).

Almost surely, 2^12506799 is an apocalyptic number.

12506799 is a deficient number, since it is larger than the sum of its proper divisors (4168937).

12506799 is an equidigital number, since it uses as much as digits as its factorization.

12506799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4168936.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 12506799 is about 3536.4952990213. The cubic root of 12506799 is about 232.1215116040.

The spelling of 12506799 in words is "twelve million, five hundred six thousand, seven hundred ninety-nine".