805499347 has 2 divisors, whose sum is σ = 805499348. Its totient is φ = 805499346.

The previous prime is 805499323. The next prime is 805499351. The reversal of 805499347 is 743994508.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-805499347 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 805499347.

It is not a weakly prime, because it can be changed into another prime (805490347) 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, 402749673 + 402749674.

It is an arithmetic number, because the mean of its divisors is an integer number (402749674).

Almost surely, 2^805499347 is an apocalyptic number.

805499347 is a deficient number, since it is larger than the sum of its proper divisors (1).

805499347 is an equidigital number, since it uses as much as digits as its factorization.

805499347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 805499347 is about 28381.3203885936. The cubic root of 805499347 is about 930.4400534318.

The spelling of 805499347 in words is "eight hundred five million, four hundred ninety-nine thousand, three hundred forty-seven".