12923729 has 8 divisors (see below), whose sum is σ = 15906240. Its totient is φ = 10225296.

The previous prime is 12923717. The next prime is 12923737. The reversal of 12923729 is 92732921.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12923729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12923789) 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 7 ways as a sum of consecutive naturals, for example, 70919 + ... + 71100.

It is an arithmetic number, because the mean of its divisors is an integer number (1988280).

Almost surely, 2^12923729 is an apocalyptic number.

It is an amenable number.

12923729 is a deficient number, since it is larger than the sum of its proper divisors (2982511).

12923729 is a wasteful number, since it uses less digits than its factorization.

12923729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142039.

The product of its digits is 13608, while the sum is 35.

The square root of 12923729 is about 3594.9588314750. The cubic root of 12923729 is about 234.6727238432.

The spelling of 12923729 in words is "twelve million, nine hundred twenty-three thousand, seven hundred twenty-nine".