2798539 has 2 divisors, whose sum is σ = 2798540. Its totient is φ = 2798538.

The previous prime is 2798527. The next prime is 2798597. The reversal of 2798539 is 9358972.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2798539 - 2¹⁵ = 2765771 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2798495 and 2798504.

It is not a weakly prime, because it can be changed into another prime (2798519) 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, 1399269 + 1399270.

It is an arithmetic number, because the mean of its divisors is an integer number (1399270).

2^2798539 is an apocalyptic number.

2798539 is a deficient number, since it is larger than the sum of its proper divisors (1).

2798539 is an equidigital number, since it uses as much as digits as its factorization.

2798539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 43.

The square root of 2798539 is about 1672.8834388564. The cubic root of 2798539 is about 140.9214558443.

The spelling of 2798539 in words is "two million, seven hundred ninety-eight thousand, five hundred thirty-nine".