12549487 has 2 divisors, whose sum is σ = 12549488. Its totient is φ = 12549486.

The previous prime is 12549479. The next prime is 12549521. The reversal of 12549487 is 78494521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12549487 - 2³ = 12549479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12549457) 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, 6274743 + 6274744.

It is an arithmetic number, because the mean of its divisors is an integer number (6274744).

Almost surely, 2^12549487 is an apocalyptic number.

12549487 is a deficient number, since it is larger than the sum of its proper divisors (1).

12549487 is an equidigital number, since it uses as much as digits as its factorization.

12549487 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 12549487 is about 3542.5255115525. The cubic root of 12549487 is about 232.3853028132.

The spelling of 12549487 in words is "twelve million, five hundred forty-nine thousand, four hundred eighty-seven".