12788977 has 2 divisors, whose sum is σ = 12788978. Its totient is φ = 12788976.

The previous prime is 12788959. The next prime is 12788999. The reversal of 12788977 is 77988721.

12788977 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10601536 + 2187441 = 3256^2 + 1479^2 .

It is a cyclic number.

It is not a de Polignac number, because 12788977 - 2²³ = 4400369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12788977.

It is not a weakly prime, because it can be changed into another prime (12788177) 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 as a sum of consecutive naturals, namely, 6394488 + 6394489.

It is an arithmetic number, because the mean of its divisors is an integer number (6394489).

Almost surely, 2^12788977 is an apocalyptic number.

It is an amenable number.

12788977 is a deficient number, since it is larger than the sum of its proper divisors (1).

12788977 is an equidigital number, since it uses as much as digits as its factorization.

12788977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 395136, while the sum is 49.

The square root of 12788977 is about 3576.1679211133. The cubic root of 12788977 is about 233.8542509232.

The spelling of 12788977 in words is "twelve million, seven hundred eighty-eight thousand, nine hundred seventy-seven".