806338789 has 2 divisors, whose sum is σ = 806338790. Its totient is φ = 806338788.

The previous prime is 806338783. The next prime is 806338831. The reversal of 806338789 is 987833608.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 576816289 + 229522500 = 24017^2 + 15150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-806338789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (806338783) 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, 403169394 + 403169395.

It is an arithmetic number, because the mean of its divisors is an integer number (403169395).

Almost surely, 2^806338789 is an apocalyptic number.

It is an amenable number.

806338789 is a deficient number, since it is larger than the sum of its proper divisors (1).

806338789 is an equidigital number, since it uses as much as digits as its factorization.

806338789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 806338789 is about 28396.1051730691. The cubic root of 806338789 is about 930.7631570645.

The spelling of 806338789 in words is "eight hundred six million, three hundred thirty-eight thousand, seven hundred eighty-nine".