2009879 has 2 divisors, whose sum is σ = 2009880. Its totient is φ = 2009878.

The previous prime is 2009873. The next prime is 2009881. The reversal of 2009879 is 9789002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2009879 is a prime.

It is a super-2 number, since 2×2009879² = 8079227189282, which contains 22 as substring.

Together with 2009881, 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 (2009873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004939 + 1004940.

It is an arithmetic number, because the mean of its divisors is an integer number (1004940).

2^2009879 is an apocalyptic number.

2009879 is a deficient number, since it is larger than the sum of its proper divisors (1).

2009879 is an equidigital number, since it uses as much as digits as its factorization.

2009879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 2009879 is about 1417.7020138238. The cubic root of 2009879 is about 126.1992103647.

The spelling of 2009879 in words is "two million, nine thousand, eight hundred seventy-nine".