2816839 has 2 divisors, whose sum is σ = 2816840. Its totient is φ = 2816838.

The previous prime is 2816831. The next prime is 2816861. The reversal of 2816839 is 9386182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2816839 - 2³ = 2816831 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2816798 and 2816807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2816831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1408419 + 1408420.

It is an arithmetic number, because the mean of its divisors is an integer number (1408420).

2^2816839 is an apocalyptic number.

2816839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2816839 is an equidigital number, since it uses as much as digits as its factorization.

2816839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 37.

The square root of 2816839 is about 1678.3441244274. The cubic root of 2816839 is about 141.2279564629.

It can be divided in two parts, 2816 and 839, that added together give a triangular number (3655 = T₈₅).

The spelling of 2816839 in words is "two million, eight hundred sixteen thousand, eight hundred thirty-nine".