2179 has 2 divisors, whose sum is σ = 2180.
Its totient is φ = 2178.
The previous prime is 2161. The next prime is 2203. The reversal of 2179 is 9712.
It can be divided in two parts, 217 and 9, that multiplied together give a triangular number (1953 = T62).
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 2179 - 29 = 1667 is a prime.
It is a Chen prime.
It is a d-powerful number, because it can be written as 211 + 72 + 1 + 92 .
It is a lonely number, since its distance to closest prime (2161) sets a new record.
It is a nialpdrome in base 13 and base 16.
It is not a weakly prime, because it can be changed into another prime (2129) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1089 + 1090.
It is an arithmetic number, because the mean of its divisors is an integer number (1090).
2179 is a deficient number, since it is larger than the sum of its proper divisors (1).
2179 is an equidigital number, since it uses as much as digits as its factorization.
2179 is an evil number, because the sum of its binary digits is even.
The product of its digits is 126, while the sum is 19.
The square root of 2179 is about 46.6797600679.
The cubic root of 2179 is about 12.9643996392.
The spelling of 2179 in words is "two thousand, one hundred seventy-nine".