2168239 has 2 divisors, whose sum is σ = 2168240. Its totient is φ = 2168238.

The previous prime is 2168219. The next prime is 2168263. The reversal of 2168239 is 9328612.

2168239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2168239 is a prime.

It is a super-2 number, since 2×2168239² = 9402520722242, which contains 22 as substring.

2168239 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2168239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2168219) 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, 1084119 + 1084120.

It is an arithmetic number, because the mean of its divisors is an integer number (1084120).

2^2168239 is an apocalyptic number.

2168239 is a deficient number, since it is larger than the sum of its proper divisors (1).

2168239 is an equidigital number, since it uses as much as digits as its factorization.

2168239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The square root of 2168239 is about 1472.4941426030. The cubic root of 2168239 is about 129.4302283128.

The spelling of 2168239 in words is "two million, one hundred sixty-eight thousand, two hundred thirty-nine".