2879999 has 2 divisors, whose sum is σ = 2880000. Its totient is φ = 2879998.

The previous prime is 2879971. The next prime is 2880029. The reversal of 2879999 is 9999782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2879999 - 2¹² = 2875903 is a prime.

It is a Chen prime.

2879999 is a modest number, since divided by 9999 gives 287 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 2879999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2879909) 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, 1439999 + 1440000.

It is an arithmetic number, because the mean of its divisors is an integer number (1440000).

2^2879999 is an apocalyptic number.

2879999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2879999 is an equidigital number, since it uses as much as digits as its factorization.

2879999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 53.

The square root of 2879999 is about 1697.0559802199. The cubic root of 2879999 is about 142.2757157125.

The spelling of 2879999 in words is "two million, eight hundred seventy-nine thousand, nine hundred ninety-nine".