13387829 has 12 divisors (see below), whose sum is σ = 16772364. Its totient is φ = 10592064.

The previous prime is 13387813. The next prime is 13387841. The reversal of 13387829 is 92878331.

It can be written as a sum of positive squares in 2 ways, for example, as 592900 + 12794929 = 770^2 + 3577^2 .

It is not a de Polignac number, because 13387829 - 2⁴ = 13387813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13387849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9872 + ... + 11145.

It is an arithmetic number, because the mean of its divisors is an integer number (1397697).

Almost surely, 2^13387829 is an apocalyptic number.

It is an amenable number.

13387829 is a deficient number, since it is larger than the sum of its proper divisors (3384535).

13387829 is a wasteful number, since it uses less digits than its factorization.

13387829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21044 (or 21037 counting only the distinct ones).

The product of its digits is 72576, while the sum is 41.

The square root of 13387829 is about 3658.9382339690. The cubic root of 13387829 is about 237.4488399499.

The spelling of 13387829 in words is "thirteen million, three hundred eighty-seven thousand, eight hundred twenty-nine".