805048811 has 4 divisors (see below), whose sum is σ = 920055792. Its totient is φ = 690041832.

The previous prime is 805048807. The next prime is 805048819. The reversal of 805048811 is 118840508.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 805048811 - 2² = 805048807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (805048819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57503480 + ... + 57503493.

It is an arithmetic number, because the mean of its divisors is an integer number (230013948).

Almost surely, 2^805048811 is an apocalyptic number.

805048811 is a deficient number, since it is larger than the sum of its proper divisors (115006981).

805048811 is a wasteful number, since it uses less digits than its factorization.

805048811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115006980.

The product of its (nonzero) digits is 10240, while the sum is 35.

The square root of 805048811 is about 28373.3820860327. The cubic root of 805048811 is about 930.2665482550.

The spelling of 805048811 in words is "eight hundred five million, forty-eight thousand, eight hundred eleven".