13487329 has 4 divisors (see below), whose sum is σ = 13494676. Its totient is φ = 13479984.

The previous prime is 13487323. The next prime is 13487339. The reversal of 13487329 is 92378431.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 92378431 = 5741 ⋅16091.

It can be written as a sum of positive squares in 2 ways, for example, as 2331729 + 11155600 = 1527^2 + 3340^2 .

It is a cyclic number.

It is not a de Polignac number, because 13487329 - 2⁵ = 13487297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13487323) 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, 1747 + ... + 5479.

It is an arithmetic number, because the mean of its divisors is an integer number (3373669).

Almost surely, 2^13487329 is an apocalyptic number.

It is an amenable number.

13487329 is a deficient number, since it is larger than the sum of its proper divisors (7347).

13487329 is an equidigital number, since it uses as much as digits as its factorization.

13487329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7346.

The product of its digits is 36288, while the sum is 37.

The square root of 13487329 is about 3672.5099046837. The cubic root of 13487329 is about 238.0356383325.

The spelling of 13487329 in words is "thirteen million, four hundred eighty-seven thousand, three hundred twenty-nine".