9967549 has 2 divisors, whose sum is σ = 9967550. Its totient is φ = 9967548.

The previous prime is 9967537. The next prime is 9967597. The reversal of 9967549 is 9457699.

9967549 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9966649 + 900 = 3157^2 + 30^2 .

It is a cyclic number.

It is not a de Polignac number, because 9967549 - 2⁷ = 9967421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9967249) 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 as a sum of consecutive naturals, namely, 4983774 + 4983775.

It is an arithmetic number, because the mean of its divisors is an integer number (4983775).

Almost surely, 2^9967549 is an apocalyptic number.

It is an amenable number.

9967549 is a deficient number, since it is larger than the sum of its proper divisors (1).

9967549 is an equidigital number, since it uses as much as digits as its factorization.

9967549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360, while the sum is 49.

The square root of 9967549 is about 3157.1425371687. The cubic root of 9967549 is about 215.2101712623.

The spelling of 9967549 in words is "nine million, nine hundred sixty-seven thousand, five hundred forty-nine".