394188112 has 40 divisors (see below), whose sum is σ = 813436776. Its totient is φ = 184406016.

The previous prime is 394188073. The next prime is 394188127. The reversal of 394188112 is 211881493.

It can be written as a sum of positive squares in 4 ways, for example, as 119159056 + 275029056 = 10916^2 + 16584^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42868 + ... + 51244.

Almost surely, 2^394188112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394188112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406718388).

394188112 is an abundant number, since it is smaller than the sum of its proper divisors (419248664).

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

394188112 is a wasteful number, since it uses less digits than its factorization.

394188112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8575 (or 8569 counting only the distinct ones).

The product of its digits is 13824, while the sum is 37.

The square root of 394188112 is about 19854.1711486529. The cubic root of 394188112 is about 733.2203458615.

The spelling of 394188112 in words is "three hundred ninety-four million, one hundred eighty-eight thousand, one hundred twelve".