800539 has 2 divisors, whose sum is σ = 800540. Its totient is φ = 800538.

The previous prime is 800537. The next prime is 800549. The reversal of 800539 is 935008.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 800539 - 2¹ = 800537 is a prime.

Together with 800537, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (800533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400269 + 400270.

It is an arithmetic number, because the mean of its divisors is an integer number (400270).

2⁸⁰⁰⁵³⁹ is an apocalyptic number.

800539 is a deficient number, since it is larger than the sum of its proper divisors (1).

800539 is an equidigital number, since it uses as much as digits as its factorization.

800539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 800539 is about 894.7284504250. The cubic root of 800539 is about 92.8526204616.

The spelling of 800539 in words is "eight hundred thousand, five hundred thirty-nine".