394896384 has 231 divisors, whose sum is σ = 1237266163. Its totient is φ = 125908992.

The previous prime is 394896377. The next prime is 394896389. The reversal of 394896384 is 483698493.

It is a happy number.

The square root of 394896384 is 19872.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 394896384.

It is not an unprimeable number, because it can be changed into a prime (394896389) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 17169397 + ... + 17169419.

Almost surely, 2^394896384 is an apocalyptic number.

394896384 is the 19872-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394896384

394896384 is an abundant number, since it is smaller than the sum of its proper divisors (842369779).

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

394896384 is an frugal number, since it uses more digits than its factorization.

394896384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 28 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The cubic root of 394896384 is about 733.6592299879.

The spelling of 394896384 in words is "three hundred ninety-four million, eight hundred ninety-six thousand, three hundred eighty-four".