13529389 has 4 divisors (see below), whose sum is σ = 13541724. Its totient is φ = 13517056.

The previous prime is 13529371. The next prime is 13529393. The reversal of 13529389 is 98392531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98392531 = 6581 ⋅14951.

It can be written as a sum of positive squares in 2 ways, for example, as 2856100 + 10673289 = 1690^2 + 3267^2 .

It is a cyclic number.

It is not a de Polignac number, because 13529389 - 2¹³ = 13521197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13524389) 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 3 ways as a sum of consecutive naturals, for example, 4342 + ... + 6775.

It is an arithmetic number, because the mean of its divisors is an integer number (3385431).

Almost surely, 2^13529389 is an apocalyptic number.

It is an amenable number.

13529389 is a deficient number, since it is larger than the sum of its proper divisors (12335).

13529389 is a wasteful number, since it uses less digits than its factorization.

13529389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12334.

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

The square root of 13529389 is about 3678.2317762751. The cubic root of 13529389 is about 238.2828182289.

The spelling of 13529389 in words is "thirteen million, five hundred twenty-nine thousand, three hundred eighty-nine".