394638393997224 has 1024 divisors, whose sum is σ = 1256863039488000. Its totient is φ = 113891174046720.

The previous prime is 394638393997163. The next prime is 394638393997249. The reversal of 394638393997224 is 422799393836493.

394638393997224 is a `hidden beast` number, since 3 + 9 + 4 + 6 + 383 + 9 + 3 + 9 + 9 + 7 + 224 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 108925859077 + ... + 108925862699.

It is an arithmetic number, because the mean of its divisors is an integer number (1227405312000).

Almost surely, 2^{394638393997224} 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 394638393997224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (628431519744000).

394638393997224 is an abundant number, since it is smaller than the sum of its proper divisors (862224645490776).

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

394638393997224 is a wasteful number, since it uses less digits than its factorization.

394638393997224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4035 (or 4025 counting only the distinct ones).

The product of its digits is 11428107264, while the sum is 81.

The spelling of 394638393997224 in words is "three hundred ninety-four trillion, six hundred thirty-eight billion, three hundred ninety-three million, nine hundred ninety-seven thousand, two hundred twenty-four".