394605853340 has 96 divisors (see below), whose sum is σ = 896474283264. Its totient is φ = 145333739520.

The previous prime is 394605853321. The next prime is 394605853361. The reversal of 394605853340 is 43358506493.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53896880 + ... + 53904200.

It is an arithmetic number, because the mean of its divisors is an integer number (9338273784).

Almost surely, 2^394605853340 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 394605853340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (448237141632).

394605853340 is an abundant number, since it is smaller than the sum of its proper divisors (501868429924).

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

394605853340 is a wasteful number, since it uses less digits than its factorization.

394605853340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10767 (or 10765 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 50.

The spelling of 394605853340 in words is "three hundred ninety-four billion, six hundred five million, eight hundred fifty-three thousand, three hundred forty".