2167889 has 2 divisors, whose sum is σ = 2167890. Its totient is φ = 2167888.

The previous prime is 2167883. The next prime is 2167903. The reversal of 2167889 is 9887612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2007889 + 160000 = 1417^2 + 400^2 .

It is a cyclic number.

It is not a de Polignac number, because 2167889 - 2⁴ = 2167873 is a prime.

It is not a weakly prime, because it can be changed into another prime (2167883) 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, 1083944 + 1083945.

It is an arithmetic number, because the mean of its divisors is an integer number (1083945).

2^2167889 is an apocalyptic number.

It is an amenable number.

2167889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2167889 is an equidigital number, since it uses as much as digits as its factorization.

2167889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 41.

The square root of 2167889 is about 1472.3752918329. The cubic root of 2167889 is about 129.4232636720.

The spelling of 2167889 in words is "two million, one hundred sixty-seven thousand, eight hundred eighty-nine".