394664822 has 8 divisors (see below), whose sum is σ = 592267896. Its totient is φ = 197242192.

The previous prime is 394664821. The next prime is 394664833. The reversal of 394664822 is 228466493.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394664821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39503 + ... + 48474.

It is an arithmetic number, because the mean of its divisors is an integer number (74033487).

Almost surely, 2^394664822 is an apocalyptic number.

394664822 is a deficient number, since it is larger than the sum of its proper divisors (197603074).

394664822 is a wasteful number, since it uses less digits than its factorization.

394664822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90222.

The product of its digits is 497664, while the sum is 44.

The square root of 394664822 is about 19866.1728070608. The cubic root of 394664822 is about 733.5157992696.

The spelling of 394664822 in words is "three hundred ninety-four million, six hundred sixty-four thousand, eight hundred twenty-two".