2097779 has 2 divisors, whose sum is σ = 2097780. Its totient is φ = 2097778.

The previous prime is 2097769. The next prime is 2097787. The reversal of 2097779 is 9777902.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2097779 - 2⁴ = 2097763 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 (2097709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1048889 + 1048890.

It is an arithmetic number, because the mean of its divisors is an integer number (1048890).

2^2097779 is an apocalyptic number.

2097779 is a deficient number, since it is larger than the sum of its proper divisors (1).

2097779 is an equidigital number, since it uses as much as digits as its factorization.

2097779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55566, while the sum is 41.

The square root of 2097779 is about 1448.3711540900. The cubic root of 2097779 is about 128.0127550766.

The spelling of 2097779 in words is "two million, ninety-seven thousand, seven hundred seventy-nine".