12777009 has 8 divisors (see below), whose sum is σ = 19469760. Its totient is φ = 7301136.

The previous prime is 12776993. The next prime is 12777041. The reversal of 12777009 is 90077721.

12777009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12777009 - 2⁴ = 12776993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12777049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304194 + ... + 304235.

It is an arithmetic number, because the mean of its divisors is an integer number (2433720).

Almost surely, 2^12777009 is an apocalyptic number.

It is an amenable number.

12777009 is a deficient number, since it is larger than the sum of its proper divisors (6692751).

12777009 is an equidigital number, since it uses as much as digits as its factorization.

12777009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608439.

The product of its (nonzero) digits is 6174, while the sum is 33.

The square root of 12777009 is about 3574.4942299576. The cubic root of 12777009 is about 233.7812807614.

The spelling of 12777009 in words is "twelve million, seven hundred seventy-seven thousand, nine".