2879857 has 2 divisors, whose sum is σ = 2879858. Its totient is φ = 2879856.

The previous prime is 2879843. The next prime is 2879873. The reversal of 2879857 is 7589782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2792241 + 87616 = 1671^2 + 296^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2879857 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2879837) 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, 1439928 + 1439929.

It is an arithmetic number, because the mean of its divisors is an integer number (1439929).

2^2879857 is an apocalyptic number.

It is an amenable number.

2879857 is a deficient number, since it is larger than the sum of its proper divisors (1).

2879857 is an equidigital number, since it uses as much as digits as its factorization.

2879857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 46.

The square root of 2879857 is about 1697.0141425457. The cubic root of 2879857 is about 142.2733773455.

The spelling of 2879857 in words is "two million, eight hundred seventy-nine thousand, eight hundred fifty-seven".