2642879 has 2 divisors, whose sum is σ = 2642880. Its totient is φ = 2642878.

The previous prime is 2642869. The next prime is 2642891. The reversal of 2642879 is 9782462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2642879 - 2⁴ = 2642863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2642839) 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, 1321439 + 1321440.

It is an arithmetic number, because the mean of its divisors is an integer number (1321440).

2^2642879 is an apocalyptic number.

2642879 is a deficient number, since it is larger than the sum of its proper divisors (1).

2642879 is an equidigital number, since it uses as much as digits as its factorization.

2642879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 2642879 is about 1625.6933905260. The cubic root of 2642879 is about 138.2586865214.

The spelling of 2642879 in words is "two million, six hundred forty-two thousand, eight hundred seventy-nine".