806447 has 2 divisors, whose sum is σ = 806448. Its totient is φ = 806446.

The previous prime is 806389. The next prime is 806453. The reversal of 806447 is 744608.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 806447 - 2⁶ = 806383 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 806447.

It is not a weakly prime, because it can be changed into another prime (806467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403223 + 403224.

It is an arithmetic number, because the mean of its divisors is an integer number (403224).

2⁸⁰⁶⁴⁴⁷ is an apocalyptic number.

806447 is a deficient number, since it is larger than the sum of its proper divisors (1).

806447 is an equidigital number, since it uses as much as digits as its factorization.

806447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 806447 is about 898.0239417744. The cubic root of 806447 is about 93.0804791469.

The spelling of 806447 in words is "eight hundred six thousand, four hundred forty-seven".