809204604 has 72 divisors (see below), whose sum is σ = 2146188240. Its totient is φ = 235865088.

The previous prime is 809204597. The next prime is 809204633. The reversal of 809204604 is 406402908.

It is a super-2 number, since 2×809204604² = 1309624182269593632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49132 + ... + 63500.

It is an arithmetic number, because the mean of its divisors is an integer number (29808170).

Almost surely, 2^809204604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 809204604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1073094120).

809204604 is an abundant number, since it is smaller than the sum of its proper divisors (1336983636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

809204604 is a wasteful number, since it uses less digits than its factorization.

809204604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14427 (or 14406 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 809204604 is about 28446.5218260511. The cubic root of 809204604 is about 931.8645308329.

The spelling of 809204604 in words is "eight hundred nine million, two hundred four thousand, six hundred four".