13539289 has 2 divisors, whose sum is σ = 13539290. Its totient is φ = 13539288.

The previous prime is 13539287. The next prime is 13539301. The reversal of 13539289 is 98293531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8363664 + 5175625 = 2892^2 + 2275^2 .

It is a cyclic number.

It is not a de Polignac number, because 13539289 - 2¹ = 13539287 is a prime.

Together with 13539287, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13539283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6769644 + 6769645.

It is an arithmetic number, because the mean of its divisors is an integer number (6769645).

Almost surely, 2^13539289 is an apocalyptic number.

It is an amenable number.

13539289 is a deficient number, since it is larger than the sum of its proper divisors (1).

13539289 is an equidigital number, since it uses as much as digits as its factorization.

13539289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 40.

The square root of 13539289 is about 3679.5772855044. The cubic root of 13539289 is about 238.3409244435.

The spelling of 13539289 in words is "thirteen million, five hundred thirty-nine thousand, two hundred eighty-nine".