2146439 has 2 divisors, whose sum is σ = 2146440. Its totient is φ = 2146438.

The previous prime is 2146433. The next prime is 2146457. The reversal of 2146439 is 9346412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2146439 - 2⁴ = 2146423 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2146433) 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, 1073219 + 1073220.

It is an arithmetic number, because the mean of its divisors is an integer number (1073220).

2^2146439 is an apocalyptic number.

2146439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2146439 is an equidigital number, since it uses as much as digits as its factorization.

2146439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 29.

The square root of 2146439 is about 1465.0730357221. The cubic root of 2146439 is about 128.9949920937.

The spelling of 2146439 in words is "two million, one hundred forty-six thousand, four hundred thirty-nine".