13539727 has 2 divisors, whose sum is σ = 13539728. Its totient is φ = 13539726.

The previous prime is 13539719. The next prime is 13539737. The reversal of 13539727 is 72793531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13539727 - 2³ = 13539719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13539737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6769863 + 6769864.

It is an arithmetic number, because the mean of its divisors is an integer number (6769864).

Almost surely, 2^13539727 is an apocalyptic number.

13539727 is a deficient number, since it is larger than the sum of its proper divisors (1).

13539727 is an equidigital number, since it uses as much as digits as its factorization.

13539727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39690, while the sum is 37.

The square root of 13539727 is about 3679.6368027293. The cubic root of 13539727 is about 238.3434945489.

It can be divided in two parts, 135397 and 27, that added together give a square (135424 = 368²).

The spelling of 13539727 in words is "thirteen million, five hundred thirty-nine thousand, seven hundred twenty-seven".