13539049 has 2 divisors, whose sum is σ = 13539050. Its totient is φ = 13539048.

The previous prime is 13539047. The next prime is 13539059. The reversal of 13539049 is 94093531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6985449 + 6553600 = 2643^2 + 2560^2 .

It is a cyclic number.

It is not a de Polignac number, because 13539049 - 2¹ = 13539047 is a prime.

Together with 13539047, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13539047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6769524 + 6769525.

It is an arithmetic number, because the mean of its divisors is an integer number (6769525).

Almost surely, 2^13539049 is an apocalyptic number.

It is an amenable number.

13539049 is a deficient number, since it is larger than the sum of its proper divisors (1).

13539049 is an equidigital number, since it uses as much as digits as its factorization.

13539049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 13539049 is about 3679.5446729181. The cubic root of 13539049 is about 238.3395161430.

The spelling of 13539049 in words is "thirteen million, five hundred thirty-nine thousand, forty-nine".