12247549 has 2 divisors, whose sum is σ = 12247550. Its totient is φ = 12247548.

The previous prime is 12247517. The next prime is 12247577. The reversal of 12247549 is 94574221.

12247549 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9548100 + 2699449 = 3090^2 + 1643^2 .

It is a cyclic number.

It is not a de Polignac number, because 12247549 - 2⁵ = 12247517 is a prime.

It is a super-4 number, since 4×12247549⁴ (a number of 29 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12247579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6123774 + 6123775.

It is an arithmetic number, because the mean of its divisors is an integer number (6123775).

Almost surely, 2^12247549 is an apocalyptic number.

It is an amenable number.

12247549 is a deficient number, since it is larger than the sum of its proper divisors (1).

12247549 is an equidigital number, since it uses as much as digits as its factorization.

12247549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 34.

The square root of 12247549 is about 3499.6498396268. The cubic root of 12247549 is about 230.5064391838.

The spelling of 12247549 in words is "twelve million, two hundred forty-seven thousand, five hundred forty-nine".