13703729 has 4 divisors (see below), whose sum is σ = 14757876. Its totient is φ = 12649584.

The previous prime is 13703719. The next prime is 13703741. The reversal of 13703729 is 92730731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4389025 + 9314704 = 2095^2 + 3052^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13703729 is a prime.

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 = 13703695 and 13703704.

It is not an unprimeable number, because it can be changed into a prime (13703719) 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, 527054 + ... + 527079.

It is an arithmetic number, because the mean of its divisors is an integer number (3689469).

Almost surely, 2^13703729 is an apocalyptic number.

It is an amenable number.

13703729 is a deficient number, since it is larger than the sum of its proper divisors (1054147).

13703729 is a wasteful number, since it uses less digits than its factorization.

13703729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054146.

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 13703729 is about 3701.8548053645. The cubic root of 13703729 is about 239.3019589816.

The spelling of 13703729 in words is "thirteen million, seven hundred three thousand, seven hundred twenty-nine".