805747447 has 2 divisors, whose sum is σ = 805747448. Its totient is φ = 805747446.

The previous prime is 805747441. The next prime is 805747463. The reversal of 805747447 is 744747508.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-805747447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 805747397 and 805747406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (805747441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402873723 + 402873724.

It is an arithmetic number, because the mean of its divisors is an integer number (402873724).

Almost surely, 2^805747447 is an apocalyptic number.

805747447 is a deficient number, since it is larger than the sum of its proper divisors (1).

805747447 is an equidigital number, since it uses as much as digits as its factorization.

805747447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 878080, while the sum is 46.

The square root of 805747447 is about 28385.6908846693. The cubic root of 805747447 is about 930.5355711923.

The spelling of 805747447 in words is "eight hundred five million, seven hundred forty-seven thousand, four hundred forty-seven".