13246729 has 2 divisors, whose sum is σ = 13246730. Its totient is φ = 13246728.

The previous prime is 13246721. The next prime is 13246747. The reversal of 13246729 is 92764231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6734025 + 6512704 = 2595^2 + 2552^2 .

It is a cyclic number.

It is not a de Polignac number, because 13246729 - 2³ = 13246721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13246694 and 13246703.

It is not a weakly prime, because it can be changed into another prime (13246721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6623364 + 6623365.

It is an arithmetic number, because the mean of its divisors is an integer number (6623365).

Almost surely, 2^13246729 is an apocalyptic number.

It is an amenable number.

13246729 is a deficient number, since it is larger than the sum of its proper divisors (1).

13246729 is an equidigital number, since it uses as much as digits as its factorization.

13246729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The square root of 13246729 is about 3639.6056105023. The cubic root of 13246729 is about 236.6117007399.

It can be divided in two parts, 132467 and 29, that added together give a square (132496 = 364²).

The spelling of 13246729 in words is "thirteen million, two hundred forty-six thousand, seven hundred twenty-nine".