13388549 has 2 divisors, whose sum is σ = 13388550. Its totient is φ = 13388548.

The previous prime is 13388539. The next prime is 13388563. The reversal of 13388549 is 94588331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13322500 + 66049 = 3650^2 + 257^2 .

It is an emirp because it is prime and its reverse (94588331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13388549 - 2¹² = 13384453 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13388539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6694274 + 6694275.

It is an arithmetic number, because the mean of its divisors is an integer number (6694275).

Almost surely, 2^13388549 is an apocalyptic number.

It is an amenable number.

13388549 is a deficient number, since it is larger than the sum of its proper divisors (1).

13388549 is an equidigital number, since it uses as much as digits as its factorization.

13388549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 41.

The square root of 13388549 is about 3659.0366218446. The cubic root of 13388549 is about 237.4530965549.

The spelling of 13388549 in words is "thirteen million, three hundred eighty-eight thousand, five hundred forty-nine".