12077729 has 2 divisors, whose sum is σ = 12077730. Its totient is φ = 12077728.

The previous prime is 12077707. The next prime is 12077759. The reversal of 12077729 is 92777021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10387729 + 1690000 = 3223^2 + 1300^2 .

It is an emirp because it is prime and its reverse (92777021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12077729 - 2⁸ = 12077473 is a prime.

It is not a weakly prime, because it can be changed into another prime (12077759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6038864 + 6038865.

It is an arithmetic number, because the mean of its divisors is an integer number (6038865).

Almost surely, 2^12077729 is an apocalyptic number.

It is an amenable number.

12077729 is a deficient number, since it is larger than the sum of its proper divisors (1).

12077729 is an equidigital number, since it uses as much as digits as its factorization.

12077729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 12077729 is about 3475.3027206274. The cubic root of 12077729 is about 229.4361044382.

The spelling of 12077729 in words is "twelve million, seventy-seven thousand, seven hundred twenty-nine".