2146289 has 2 divisors, whose sum is σ = 2146290. Its totient is φ = 2146288.

The previous prime is 2146283. The next prime is 2146303. The reversal of 2146289 is 9826412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2146225 + 64 = 1465^2 + 8^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2146289 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2146283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1073144 + 1073145.

It is an arithmetic number, because the mean of its divisors is an integer number (1073145).

2^2146289 is an apocalyptic number.

It is an amenable number.

2146289 is a deficient number, since it is larger than the sum of its proper divisors (1).

2146289 is an equidigital number, since it uses as much as digits as its factorization.

2146289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 32.

The square root of 2146289 is about 1465.0218428406. The cubic root of 2146289 is about 128.9919871633.

The spelling of 2146289 in words is "two million, one hundred forty-six thousand, two hundred eighty-nine".