13201729 has 4 divisors (see below), whose sum is σ = 13271040. Its totient is φ = 13132420.

The previous prime is 13201723. The next prime is 13201759. The reversal of 13201729 is 92710231.

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 a cyclic number.

It is not a de Polignac number, because 13201729 - 2⁹ = 13201217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13201723) 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, 34369 + ... + 34750.

It is an arithmetic number, because the mean of its divisors is an integer number (3317760).

Almost surely, 2^13201729 is an apocalyptic number.

It is an amenable number.

13201729 is a deficient number, since it is larger than the sum of its proper divisors (69311).

13201729 is an equidigital number, since it uses as much as digits as its factorization.

13201729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69310.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 13201729 is about 3633.4183629194. The cubic root of 13201729 is about 236.3434683303.

The spelling of 13201729 in words is "thirteen million, two hundred one thousand, seven hundred twenty-nine".