394172384 has 24 divisors (see below), whose sum is σ = 776520360. Its totient is φ = 196960896.

The previous prime is 394172381. The next prime is 394172399. The reversal of 394172384 is 483271493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394172381) 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, 66902 + ... + 72554.

It is an arithmetic number, because the mean of its divisors is an integer number (32355015).

Almost surely, 2^394172384 is an apocalyptic number.

It is an amenable number.

394172384 is a deficient number, since it is larger than the sum of its proper divisors (382347976).

394172384 is a wasteful number, since it uses less digits than its factorization.

394172384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7842 (or 7834 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 394172384 is about 19853.7750566485. The cubic root of 394172384 is about 733.2105939668.

The spelling of 394172384 in words is "three hundred ninety-four million, one hundred seventy-two thousand, three hundred eighty-four".