823285394 has 4 divisors (see below), whose sum is σ = 1234928094. Its totient is φ = 411642696.

The previous prime is 823285381. The next prime is 823285423. The reversal of 823285394 is 493582328.

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

It can be written as a sum of positive squares in only one way, i.e., 550606225 + 272679169 = 23465^2 + 16513^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205821347 + ... + 205821350.

Almost surely, 2^823285394 is an apocalyptic number.

823285394 is a deficient number, since it is larger than the sum of its proper divisors (411642700).

823285394 is a wasteful number, since it uses less digits than its factorization.

823285394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411642699.

The product of its digits is 414720, while the sum is 44.

The square root of 823285394 is about 28692.9502491466. The cubic root of 823285394 is about 937.2385357731.

The spelling of 823285394 in words is "eight hundred twenty-three million, two hundred eighty-five thousand, three hundred ninety-four".