12549847 has 2 divisors, whose sum is σ = 12549848. Its totient is φ = 12549846.

The previous prime is 12549809. The next prime is 12549857. The reversal of 12549847 is 74894521.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12549847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12549857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6274923 + 6274924.

It is an arithmetic number, because the mean of its divisors is an integer number (6274924).

Almost surely, 2^12549847 is an apocalyptic number.

12549847 is a deficient number, since it is larger than the sum of its proper divisors (1).

12549847 is an equidigital number, since it uses as much as digits as its factorization.

12549847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 40.

The square root of 12549847 is about 3542.5763223959. The cubic root of 12549847 is about 232.3875248936.

The spelling of 12549847 in words is "twelve million, five hundred forty-nine thousand, eight hundred forty-seven".