13390729 has 16 divisors (see below), whose sum is σ = 15261696. Its totient is φ = 11638800.

The previous prime is 13390709. The next prime is 13390733. The reversal of 13390729 is 92709331.

It is a cyclic number.

It is not a de Polignac number, because 13390729 - 2⁵ = 13390697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13390694 and 13390703.

It is not an unprimeable number, because it can be changed into a prime (13390709) 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 15 ways as a sum of consecutive naturals, for example, 36304 + ... + 36670.

It is an arithmetic number, because the mean of its divisors is an integer number (953856).

Almost surely, 2^13390729 is an apocalyptic number.

It is an amenable number.

13390729 is a deficient number, since it is larger than the sum of its proper divisors (1870967).

13390729 is a wasteful number, since it uses less digits than its factorization.

13390729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 13390729 is about 3659.3345023378. The cubic root of 13390729 is about 237.4659836785.

The spelling of 13390729 in words is "thirteen million, three hundred ninety thousand, seven hundred twenty-nine".