12009779 has 2 divisors, whose sum is σ = 12009780. Its totient is φ = 12009778.

The previous prime is 12009773. The next prime is 12009791. The reversal of 12009779 is 97790021.

12009779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12009779 - 2⁴ = 12009763 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12009773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6004889 + 6004890.

It is an arithmetic number, because the mean of its divisors is an integer number (6004890).

Almost surely, 2^12009779 is an apocalyptic number.

12009779 is a deficient number, since it is larger than the sum of its proper divisors (1).

12009779 is an equidigital number, since it uses as much as digits as its factorization.

12009779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938, while the sum is 35.

The square root of 12009779 is about 3465.5128047664. The cubic root of 12009779 is about 229.0050214061.

The spelling of 12009779 in words is "twelve million, nine thousand, seven hundred seventy-nine".