2172338879 has 2 divisors, whose sum is σ = 2172338880. Its totient is φ = 2172338878.

The previous prime is 2172338869. The next prime is 2172338881. The reversal of 2172338879 is 9788332712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2172338879 - 2¹⁶ = 2172273343 is a prime.

Together with 2172338881, 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 (2172338869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086169439 + 1086169440.

It is an arithmetic number, because the mean of its divisors is an integer number (1086169440).

Almost surely, 2^2172338879 is an apocalyptic number.

2172338879 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172338879 is an equidigital number, since it uses as much as digits as its factorization.

2172338879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 50.

The square root of 2172338879 is about 46608.3563215868. The cubic root of 2172338879 is about 1295.1175594295.

The spelling of 2172338879 in words is "two billion, one hundred seventy-two million, three hundred thirty-eight thousand, eight hundred seventy-nine".