2164979 has 2 divisors, whose sum is σ = 2164980. Its totient is φ = 2164978.

The previous prime is 2164963. The next prime is 2164991. The reversal of 2164979 is 9794612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2164979 - 2⁴ = 2164963 is a prime.

It is not a weakly prime, because it can be changed into another prime (2164919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082489 + 1082490.

It is an arithmetic number, because the mean of its divisors is an integer number (1082490).

2^2164979 is an apocalyptic number.

2164979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164979 is an equidigital number, since it uses as much as digits as its factorization.

2164979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 2164979 is about 1471.3867608484. The cubic root of 2164979 is about 129.3653286118.

The spelling of 2164979 in words is "two million, one hundred sixty-four thousand, nine hundred seventy-nine".