804688238 has 4 divisors (see below), whose sum is σ = 1207032360. Its totient is φ = 402344118.

The previous prime is 804688223. The next prime is 804688267. The reversal of 804688238 is 832886408.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 804688192 and 804688201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201172058 + ... + 201172061.

It is an arithmetic number, because the mean of its divisors is an integer number (301758090).

Almost surely, 2^804688238 is an apocalyptic number.

804688238 is a deficient number, since it is larger than the sum of its proper divisors (402344122).

804688238 is a wasteful number, since it uses less digits than its factorization.

804688238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402344121.

The product of its (nonzero) digits is 589824, while the sum is 47.

The square root of 804688238 is about 28367.0273028388. The cubic root of 804688238 is about 930.1276419401.

The spelling of 804688238 in words is "eight hundred four million, six hundred eighty-eight thousand, two hundred thirty-eight".