809794398 has 64 divisors (see below), whose sum is σ = 1905592320. Its totient is φ = 224640000.

The previous prime is 809794393. The next prime is 809794409. The reversal of 809794398 is 893497908.

809794398 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809794393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200398 + ... + 204398.

It is an arithmetic number, because the mean of its divisors is an integer number (29774880).

Almost surely, 2^809794398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 809794398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (952796160).

809794398 is an abundant number, since it is smaller than the sum of its proper divisors (1095797922).

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

809794398 is a wasteful number, since it uses less digits than its factorization.

809794398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4153.

The product of its (nonzero) digits is 3919104, while the sum is 57.

The square root of 809794398 is about 28456.8866533217. The cubic root of 809794398 is about 932.0908743444.

The spelling of 809794398 in words is "eight hundred nine million, seven hundred ninety-four thousand, three hundred ninety-eight".