13806329 has 4 divisors (see below), whose sum is σ = 14618484. Its totient is φ = 12994176.

The previous prime is 13806323. The next prime is 13806337. The reversal of 13806329 is 92360831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92360831 = 7727 ⋅11953.

It can be written as a sum of positive squares in 2 ways, for example, as 8410000 + 5396329 = 2900^2 + 2323^2 .

It is a cyclic number.

It is not a de Polignac number, because 13806329 - 2⁸ = 13806073 is a prime.

It is a super-2 number, since 2×13806329² = 381229440912482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13806295 and 13806304.

It is not an unprimeable number, because it can be changed into a prime (13806323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406052 + ... + 406085.

It is an arithmetic number, because the mean of its divisors is an integer number (3654621).

Almost surely, 2^13806329 is an apocalyptic number.

It is an amenable number.

13806329 is a deficient number, since it is larger than the sum of its proper divisors (812155).

13806329 is an equidigital number, since it uses as much as digits as its factorization.

13806329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812154.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 13806329 is about 3715.6868813182. The cubic root of 13806329 is about 239.8976936639.

The spelling of 13806329 in words is "thirteen million, eight hundred six thousand, three hundred twenty-nine".