13723329 has 4 divisors (see below), whose sum is σ = 18297776. Its totient is φ = 9148884.

The previous prime is 13723309. The next prime is 13723357. The reversal of 13723329 is 92332731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13723329 - 2⁹ = 13722817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13723296 and 13723305.

It is not an unprimeable number, because it can be changed into a prime (13723309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2287219 + ... + 2287224.

It is an arithmetic number, because the mean of its divisors is an integer number (4574444).

Almost surely, 2^13723329 is an apocalyptic number.

It is an amenable number.

13723329 is a deficient number, since it is larger than the sum of its proper divisors (4574447).

13723329 is an equidigital number, since it uses as much as digits as its factorization.

13723329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4574446.

The product of its digits is 6804, while the sum is 30.

The square root of 13723329 is about 3704.5011809959. The cubic root of 13723329 is about 239.4159932476.

The spelling of 13723329 in words is "thirteen million, seven hundred twenty-three thousand, three hundred twenty-nine".