12499986 has 48 divisors (see below), whose sum is σ = 27432000. Its totient is φ = 3792096.

The previous prime is 12499919. The next prime is 12499987. The reversal of 12499986 is 68999421.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12499987) 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 in 23 ways as a sum of consecutive naturals, for example, 62715 + ... + 62913.

It is an arithmetic number, because the mean of its divisors is an integer number (571500).

Almost surely, 2^12499986 is an apocalyptic number.

12499986 is an abundant number, since it is smaller than the sum of its proper divisors (14932014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12499986 is a wasteful number, since it uses less digits than its factorization.

12499986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 252 counting only the distinct ones).

The product of its digits is 279936, while the sum is 48.

The square root of 12499986 is about 3535.5319260332. The cubic root of 12499986 is about 232.0793550376.

The spelling of 12499986 in words is "twelve million, four hundred ninety-nine thousand, nine hundred eighty-six".