2168879 has 2 divisors, whose sum is σ = 2168880. Its totient is φ = 2168878.

The previous prime is 2168867. The next prime is 2168893. The reversal of 2168879 is 9788612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2168879 - 2⁴ = 2168863 is a prime.

It is a super-2 number, since 2×2168879² = 9408072233282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2168819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084439 + 1084440.

It is an arithmetic number, because the mean of its divisors is an integer number (1084440).

2^2168879 is an apocalyptic number.

2168879 is a deficient number, since it is larger than the sum of its proper divisors (1).

2168879 is an equidigital number, since it uses as much as digits as its factorization.

2168879 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 2168879 is about 1472.7114449206. The cubic root of 2168879 is about 129.4429617180.

The spelling of 2168879 in words is "two million, one hundred sixty-eight thousand, eight hundred seventy-nine".