394113384 has 128 divisors (see below), whose sum is σ = 1257004800. Its totient is φ = 112078080.

The previous prime is 394113373. The next prime is 394113389. The reversal of 394113384 is 483311493.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is not an unprimeable number, because it can be changed into a prime (394113389) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 418354 + ... + 419294.

It is an arithmetic number, because the mean of its divisors is an integer number (9820350).

Almost surely, 2^394113384 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 394113384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (628502400).

394113384 is an abundant number, since it is smaller than the sum of its proper divisors (862891416).

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

394113384 is a wasteful number, since it uses less digits than its factorization.

394113384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240 (or 1230 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 394113384 is about 19852.2891375277. The cubic root of 394113384 is about 733.1740096487.

The spelling of 394113384 in words is "three hundred ninety-four million, one hundred thirteen thousand, three hundred eighty-four".