12249986 has 16 divisors (see below), whose sum is σ = 21447936. Its totient is φ = 5138016.

The previous prime is 12249983. The next prime is 12249989. The reversal of 12249986 is 68994221.

It is an interprime number because it is at equal distance from previous prime (12249983) and next prime (12249989).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12249983) 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 7 ways as a sum of consecutive naturals, for example, 8651 + ... + 9966.

It is an arithmetic number, because the mean of its divisors is an integer number (1340496).

Almost surely, 2^12249986 is an apocalyptic number.

12249986 is a deficient number, since it is larger than the sum of its proper divisors (9197950).

12249986 is a wasteful number, since it uses less digits than its factorization.

12249986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18673.

The product of its digits is 62208, while the sum is 41.

The square root of 12249986 is about 3499.9979999994. The cubic root of 12249986 is about 230.5217267851.

The spelling of 12249986 in words is "twelve million, two hundred forty-nine thousand, nine hundred eighty-six".