828239 has 2 divisors, whose sum is σ = 828240. Its totient is φ = 828238.

The previous prime is 828221. The next prime is 828277. The reversal of 828239 is 932828.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-828239 is a prime.

It is a super-2 number, since 2×828239² = 1371959682242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (828209) 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, 414119 + 414120.

It is an arithmetic number, because the mean of its divisors is an integer number (414120).

2⁸²⁸²³⁹ is an apocalyptic number.

828239 is a deficient number, since it is larger than the sum of its proper divisors (1).

828239 is an equidigital number, since it uses as much as digits as its factorization.

828239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 32.

The square root of 828239 is about 910.0763704217. The cubic root of 828239 is about 93.9114527554.

The spelling of 828239 in words is "eight hundred twenty-eight thousand, two hundred thirty-nine".