13109549 has 2 divisors, whose sum is σ = 13109550. Its totient is φ = 13109548.

The previous prime is 13109543. The next prime is 13109557. The reversal of 13109549 is 94590131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12145225 + 964324 = 3485^2 + 982^2 .

It is a cyclic number.

It is not a de Polignac number, because 13109549 - 2⁸ = 13109293 is a prime.

It is a nialpdrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13109543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6554774 + 6554775.

It is an arithmetic number, because the mean of its divisors is an integer number (6554775).

Almost surely, 2^13109549 is an apocalyptic number.

It is an amenable number.

13109549 is a deficient number, since it is larger than the sum of its proper divisors (1).

13109549 is an equidigital number, since it uses as much as digits as its factorization.

13109549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 13109549 is about 3620.7111179988. The cubic root of 13109549 is about 235.7921000163.

The spelling of 13109549 in words is "thirteen million, one hundred nine thousand, five hundred forty-nine".