12729394 has 8 divisors (see below), whose sum is σ = 19111680. Its totient is φ = 6358836.

The previous prime is 12729391. The next prime is 12729439. The reversal of 12729394 is 49392721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12729391) 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, 667 + ... + 5089.

It is an arithmetic number, because the mean of its divisors is an integer number (2388960).

Almost surely, 2^12729394 is an apocalyptic number.

12729394 is a deficient number, since it is larger than the sum of its proper divisors (6382286).

12729394 is a wasteful number, since it uses less digits than its factorization.

12729394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5864.

The product of its digits is 27216, while the sum is 37.

The square root of 12729394 is about 3567.8276303656. The cubic root of 12729394 is about 233.4905149548.

The spelling of 12729394 in words is "twelve million, seven hundred twenty-nine thousand, three hundred ninety-four".