13489539 has 8 divisors (see below), whose sum is σ = 20555520. Its totient is φ = 7708296.

The previous prime is 13489537. The next prime is 13489549. The reversal of 13489539 is 93598431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13489539 - 2¹ = 13489537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13489539.

It is not an unprimeable number, because it can be changed into a prime (13489537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321159 + ... + 321200.

It is an arithmetic number, because the mean of its divisors is an integer number (2569440).

Almost surely, 2^13489539 is an apocalyptic number.

13489539 is a deficient number, since it is larger than the sum of its proper divisors (7065981).

13489539 is an equidigital number, since it uses as much as digits as its factorization.

13489539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642369.

The product of its digits is 116640, while the sum is 42.

The square root of 13489539 is about 3672.8107765035. The cubic root of 13489539 is about 238.0486389305.

It can be divided in two parts, 13489 and 539, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 13489539 in words is "thirteen million, four hundred eighty-nine thousand, five hundred thirty-nine".