805044893 has 2 divisors, whose sum is σ = 805044894. Its totient is φ = 805044892.

The previous prime is 805044869. The next prime is 805044907. The reversal of 805044893 is 398440508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 804119449 + 925444 = 28357^2 + 962^2 .

It is a cyclic number.

It is not a de Polignac number, because 805044893 - 2⁶ = 805044829 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 805044893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (805044293) 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, 402522446 + 402522447.

It is an arithmetic number, because the mean of its divisors is an integer number (402522447).

Almost surely, 2^805044893 is an apocalyptic number.

It is an amenable number.

805044893 is a deficient number, since it is larger than the sum of its proper divisors (1).

805044893 is an equidigital number, since it uses as much as digits as its factorization.

805044893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 805044893 is about 28373.3130423643. The cubic root of 805044893 is about 930.2650391166.

The spelling of 805044893 in words is "eight hundred five million, forty-four thousand, eight hundred ninety-three".