13750729 has 2 divisors, whose sum is σ = 13750730. Its totient is φ = 13750728.

The previous prime is 13750721. The next prime is 13750747. The reversal of 13750729 is 92705731.

13750729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13520329 + 230400 = 3677^2 + 480^2 .

It is a cyclic number.

It is not a de Polignac number, because 13750729 - 2³ = 13750721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13750694 and 13750703.

It is not a weakly prime, because it can be changed into another prime (13750721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6875364 + 6875365.

It is an arithmetic number, because the mean of its divisors is an integer number (6875365).

Almost surely, 2^13750729 is an apocalyptic number.

It is an amenable number.

13750729 is a deficient number, since it is larger than the sum of its proper divisors (1).

13750729 is an equidigital number, since it uses as much as digits as its factorization.

13750729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 13750729 is about 3708.1975405849. The cubic root of 13750729 is about 239.5752266511.

The spelling of 13750729 in words is "thirteen million, seven hundred fifty thousand, seven hundred twenty-nine".