2167439 has 2 divisors, whose sum is σ = 2167440. Its totient is φ = 2167438.

The previous prime is 2167433. The next prime is 2167441. The reversal of 2167439 is 9347612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2167439 - 2⁸ = 2167183 is a prime.

Together with 2167441, 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 (2167433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083719 + 1083720.

It is an arithmetic number, because the mean of its divisors is an integer number (1083720).

2^2167439 is an apocalyptic number.

2167439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2167439 is an equidigital number, since it uses as much as digits as its factorization.

2167439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 32.

The square root of 2167439 is about 1472.2224696017. Note that the first 3 decimals coincide. The cubic root of 2167439 is about 129.4143080322.

The spelling of 2167439 in words is "two million, one hundred sixty-seven thousand, four hundred thirty-nine".