2112779 has 2 divisors, whose sum is σ = 2112780. Its totient is φ = 2112778.

The previous prime is 2112767. The next prime is 2112793. The reversal of 2112779 is 9772112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2112779 is a prime.

It is not a weakly prime, because it can be changed into another prime (2112079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056389 + 1056390.

It is an arithmetic number, because the mean of its divisors is an integer number (1056390).

2^2112779 is an apocalyptic number.

2112779 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112779 is an equidigital number, since it uses as much as digits as its factorization.

2112779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1764, while the sum is 29.

The square root of 2112779 is about 1453.5401611239. The cubic root of 2112779 is about 128.3171456878.

The spelling of 2112779 in words is "two million, one hundred twelve thousand, seven hundred seventy-nine".