804492909 has 24 divisors (see below), whose sum is σ = 1269508032. Its totient is φ = 486870720.

The previous prime is 804492893. The next prime is 804492911. The reversal of 804492909 is 909294408.

It is not a de Polignac number, because 804492909 - 2⁴ = 804492893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804492959) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68089 + ... + 79025.

It is an arithmetic number, because the mean of its divisors is an integer number (52896168).

Almost surely, 2^804492909 is an apocalyptic number.

It is an amenable number.

804492909 is a deficient number, since it is larger than the sum of its proper divisors (465015123).

804492909 is a wasteful number, since it uses less digits than its factorization.

804492909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11697 (or 11694 counting only the distinct ones).

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

The square root of 804492909 is about 28363.5842058087. The cubic root of 804492909 is about 930.0523765160.

The spelling of 804492909 in words is "eight hundred four million, four hundred ninety-two thousand, nine hundred nine".