12479549 has 2 divisors, whose sum is σ = 12479550. Its totient is φ = 12479548.

The previous prime is 12479543. The next prime is 12479567. The reversal of 12479549 is 94597421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11868025 + 611524 = 3445^2 + 782^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12479549 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12479543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6239774 + 6239775.

It is an arithmetic number, because the mean of its divisors is an integer number (6239775).

Almost surely, 2^12479549 is an apocalyptic number.

It is an amenable number.

12479549 is a deficient number, since it is larger than the sum of its proper divisors (1).

12479549 is an equidigital number, since it uses as much as digits as its factorization.

12479549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 41.

The square root of 12479549 is about 3532.6405138366. The cubic root of 12479549 is about 231.9528057490.

The spelling of 12479549 in words is "twelve million, four hundred seventy-nine thousand, five hundred forty-nine".