2192789 has 2 divisors, whose sum is σ = 2192790. Its totient is φ = 2192788.

The previous prime is 2192783. The next prime is 2192791. The reversal of 2192789 is 9872912.

2192789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2007889 + 184900 = 1417^2 + 430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2192789 is a prime.

Together with 2192791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2192783) 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, 1096394 + 1096395.

It is an arithmetic number, because the mean of its divisors is an integer number (1096395).

2^2192789 is an apocalyptic number.

It is an amenable number.

2192789 is a deficient number, since it is larger than the sum of its proper divisors (1).

2192789 is an equidigital number, since it uses as much as digits as its factorization.

2192789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 38.

The square root of 2192789 is about 1480.8068746464. The cubic root of 2192789 is about 129.9168896788.

The spelling of 2192789 in words is "two million, one hundred ninety-two thousand, seven hundred eighty-nine".