2868839 has 4 divisors (see below), whose sum is σ = 2877024. Its totient is φ = 2860656.

The previous prime is 2868823. The next prime is 2868851. The reversal of 2868839 is 9388682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9388682 = 2 ⋅4694341.

It is a cyclic number.

It is not a de Polignac number, because 2868839 - 2⁴ = 2868823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2868839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2868809) 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 in 3 ways as a sum of consecutive naturals, for example, 3542 + ... + 4275.

It is an arithmetic number, because the mean of its divisors is an integer number (719256).

2^2868839 is an apocalyptic number.

2868839 is a deficient number, since it is larger than the sum of its proper divisors (8185).

2868839 is an equidigital number, since it uses as much as digits as its factorization.

2868839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8184.

The product of its digits is 165888, while the sum is 44.

The square root of 2868839 is about 1693.7647416333. The cubic root of 2868839 is about 142.0917049635.

The spelling of 2868839 in words is "two million, eight hundred sixty-eight thousand, eight hundred thirty-nine".