804043991903 has 8 divisors (see below), whose sum is σ = 854741921520. Its totient is φ = 754184044800.

The previous prime is 804043991879. The next prime is 804043991929. The reversal of 804043991903 is 309199340408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-804043991903 is a prime.

It is a super-2 number, since 2×804043991903² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804043993903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209493650 + ... + 209497487.

It is an arithmetic number, because the mean of its divisors is an integer number (106842740190).

Almost surely, 2^804043991903 is an apocalyptic number.

804043991903 is a deficient number, since it is larger than the sum of its proper divisors (50697929617).

804043991903 is a wasteful number, since it uses less digits than its factorization.

804043991903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418991257.

The product of its (nonzero) digits is 839808, while the sum is 50.

The spelling of 804043991903 in words is "eight hundred four billion, forty-three million, nine hundred ninety-one thousand, nine hundred three".