804905801 has 12 divisors (see below), whose sum is σ = 939386448. Its totient is φ = 687659112.

The previous prime is 804905779. The next prime is 804905819. The reversal of 804905801 is 108509408.

It is a de Polignac number, because none of the positive numbers 2^k-804905801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (804905821) 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 11 ways as a sum of consecutive naturals, for example, 11711 + ... + 41796.

It is an arithmetic number, because the mean of its divisors is an integer number (78282204).

Almost surely, 2^804905801 is an apocalyptic number.

It is an amenable number.

804905801 is a deficient number, since it is larger than the sum of its proper divisors (134480647).

804905801 is a wasteful number, since it uses less digits than its factorization.

804905801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53828 (or 53821 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 804905801 is about 28370.8618304062. The cubic root of 804905801 is about 930.2114603747.

The spelling of 804905801 in words is "eight hundred four million, nine hundred five thousand, eight hundred one".