800780833 has 2 divisors, whose sum is σ = 800780834. Its totient is φ = 800780832.

The previous prime is 800780797. The next prime is 800780867. The reversal of 800780833 is 338087008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 555639184 + 245141649 = 23572^2 + 15657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-800780833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 800780792 and 800780801.

It is not a weakly prime, because it can be changed into another prime (800789833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400390416 + 400390417.

It is an arithmetic number, because the mean of its divisors is an integer number (400390417).

Almost surely, 2^800780833 is an apocalyptic number.

It is an amenable number.

800780833 is a deficient number, since it is larger than the sum of its proper divisors (1).

800780833 is an equidigital number, since it uses as much as digits as its factorization.

800780833 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 800780833 is about 28298.0711886870. The cubic root of 800780833 is about 928.6196939905.

The spelling of 800780833 in words is "eight hundred million, seven hundred eighty thousand, eight hundred thirty-three".