13291329 has 16 divisors (see below), whose sum is σ = 18136512. Its totient is φ = 8656128.

The previous prime is 13291303. The next prime is 13291337. The reversal of 13291329 is 92319231.

It is a happy number.

13291329 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13291329 - 2¹¹ = 13289281 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13291296 and 13291305.

It is not an unprimeable number, because it can be changed into a prime (13291379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29782 + ... + 30224.

It is an arithmetic number, because the mean of its divisors is an integer number (1133532).

Almost surely, 2^13291329 is an apocalyptic number.

It is an amenable number.

13291329 is a deficient number, since it is larger than the sum of its proper divisors (4845183).

13291329 is a wasteful number, since it uses less digits than its factorization.

13291329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656.

The product of its digits is 2916, while the sum is 30.

The square root of 13291329 is about 3645.7274994163. The cubic root of 13291329 is about 236.8769501351.

The spelling of 13291329 in words is "thirteen million, two hundred ninety-one thousand, three hundred twenty-nine".