13539329 has 2 divisors, whose sum is σ = 13539330. Its totient is φ = 13539328.

The previous prime is 13539319. The next prime is 13539359. The reversal of 13539329 is 92393531.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13490929 + 48400 = 3673^2 + 220^2 .

It is a cyclic number.

It is not a de Polignac number, because 13539329 - 2⁴ = 13539313 is a prime.

It is a super-3 number, since 3×13539329³ (a number of 22 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (13539319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6769664 + 6769665.

It is an arithmetic number, because the mean of its divisors is an integer number (6769665).

Almost surely, 2^13539329 is an apocalyptic number.

It is an amenable number.

13539329 is a deficient number, since it is larger than the sum of its proper divisors (1).

13539329 is an equidigital number, since it uses as much as digits as its factorization.

13539329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21870, while the sum is 35.

The square root of 13539329 is about 3679.5827209074. The cubic root of 13539329 is about 238.3411591586.

The spelling of 13539329 in words is "thirteen million, five hundred thirty-nine thousand, three hundred twenty-nine".