804806987 has 2 divisors, whose sum is σ = 804806988. Its totient is φ = 804806986.

The previous prime is 804806957. The next prime is 804806993. The reversal of 804806987 is 789608408.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 804806987 - 2⁶ = 804806923 is a prime.

It is not a weakly prime, because it can be changed into another prime (804806957) 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, 402403493 + 402403494.

It is an arithmetic number, because the mean of its divisors is an integer number (402403494).

Almost surely, 2^804806987 is an apocalyptic number.

804806987 is a deficient number, since it is larger than the sum of its proper divisors (1).

804806987 is an equidigital number, since it uses as much as digits as its factorization.

804806987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 804806987 is about 28369.1203071227. The cubic root of 804806987 is about 930.1733931140.

The spelling of 804806987 in words is "eight hundred four million, eight hundred six thousand, nine hundred eighty-seven".