804810385 has 4 divisors (see below), whose sum is σ = 965772468. Its totient is φ = 643848304.

The previous prime is 804810373. The next prime is 804810427. The reversal of 804810385 is 583018408.

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

It can be written as a sum of positive squares in 2 ways, for example, as 485937936 + 318872449 = 22044^2 + 17857^2 .

It is a cyclic number.

It is not a de Polignac number, because 804810385 - 2²³ = 796421777 is a prime.

It is a super-3 number, since 3×804810385³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80481034 + ... + 80481043.

It is an arithmetic number, because the mean of its divisors is an integer number (241443117).

Almost surely, 2^804810385 is an apocalyptic number.

It is an amenable number.

804810385 is a deficient number, since it is larger than the sum of its proper divisors (160962083).

804810385 is a wasteful number, since it uses less digits than its factorization.

804810385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160962082.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 804810385 is about 28369.1801961213. The cubic root of 804810385 is about 930.1747022166.

The spelling of 804810385 in words is "eight hundred four million, eight hundred ten thousand, three hundred eighty-five".