800828491 has 2 divisors, whose sum is σ = 800828492. Its totient is φ = 800828490.

The previous prime is 800828477. The next prime is 800828507. The reversal of 800828491 is 194828008.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 800828491 - 2⁵ = 800828459 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (800828471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400414245 + 400414246.

It is an arithmetic number, because the mean of its divisors is an integer number (400414246).

Almost surely, 2^800828491 is an apocalyptic number.

800828491 is a deficient number, since it is larger than the sum of its proper divisors (1).

800828491 is an equidigital number, since it uses as much as digits as its factorization.

800828491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 800828491 is about 28298.9132476850. The cubic root of 800828491 is about 928.6381157099.

The spelling of 800828491 in words is "eight hundred million, eight hundred twenty-eight thousand, four hundred ninety-one".