12729901 has 2 divisors, whose sum is σ = 12729902. Its totient is φ = 12729900.

The previous prime is 12729877. The next prime is 12729917. The reversal of 12729901 is 10992721.

12729901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10569001 + 2160900 = 3251^2 + 1470^2 .

It is an emirp because it is prime and its reverse (10992721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12729901 - 2⁹ = 12729389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13729901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6364950 + 6364951.

It is an arithmetic number, because the mean of its divisors is an integer number (6364951).

Almost surely, 2^12729901 is an apocalyptic number.

It is an amenable number.

12729901 is a deficient number, since it is larger than the sum of its proper divisors (1).

12729901 is an equidigital number, since it uses as much as digits as its factorization.

12729901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 12729901 is about 3567.8986812969. The cubic root of 12729901 is about 233.4936148174.

The spelling of 12729901 in words is "twelve million, seven hundred twenty-nine thousand, nine hundred one".