12406729 has 16 divisors (see below), whose sum is σ = 13570560. Its totient is φ = 11309760.

The previous prime is 12406721. The next prime is 12406733. The reversal of 12406729 is 92760421.

It is a cyclic number.

It is not a de Polignac number, because 12406729 - 2³ = 12406721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12406729.

It is not an unprimeable number, because it can be changed into a prime (12406721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51792 + ... + 52030.

It is an arithmetic number, because the mean of its divisors is an integer number (848160).

Almost surely, 2^12406729 is an apocalyptic number.

It is an amenable number.

12406729 is a deficient number, since it is larger than the sum of its proper divisors (1163831).

12406729 is a wasteful number, since it uses less digits than its factorization.

12406729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 12406729 is about 3522.3186965407. The cubic root of 12406729 is about 231.5007658109.

The spelling of 12406729 in words is "twelve million, four hundred six thousand, seven hundred twenty-nine".