804391893 has 12 divisors (see below), whose sum is σ = 1163481280. Its totient is φ = 535531176.

The previous prime is 804391831. The next prime is 804391909. The reversal of 804391893 is 398193408.

It is not a de Polignac number, because 804391893 - 2⁹ = 804391381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804321893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53821 + ... + 67122.

Almost surely, 2^804391893 is an apocalyptic number.

It is an amenable number.

804391893 is a deficient number, since it is larger than the sum of its proper divisors (359089387).

804391893 is a wasteful number, since it uses less digits than its factorization.

804391893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121688 (or 121685 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 804391893 is about 28361.8034158620. The cubic root of 804391893 is about 930.0134476030.

The spelling of 804391893 in words is "eight hundred four million, three hundred ninety-one thousand, eight hundred ninety-three".