12965729 has 4 divisors (see below), whose sum is σ = 14817984. Its totient is φ = 11113476.

The previous prime is 12965723. The next prime is 12965731. The reversal of 12965729 is 92756921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92756921 = 1181 ⋅78541.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12965729 is a prime.

It is a super-2 number, since 2×12965729² = 336220257002882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12965723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 926117 + ... + 926130.

It is an arithmetic number, because the mean of its divisors is an integer number (3704496).

Almost surely, 2^12965729 is an apocalyptic number.

It is an amenable number.

12965729 is a deficient number, since it is larger than the sum of its proper divisors (1852255).

12965729 is an equidigital number, since it uses as much as digits as its factorization.

12965729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852254.

The product of its digits is 68040, while the sum is 41.

The square root of 12965729 is about 3600.7956065292. The cubic root of 12965729 is about 234.9266649095.

The spelling of 12965729 in words is "twelve million, nine hundred sixty-five thousand, seven hundred twenty-nine".