394316864775 has 48 divisors (see below), whose sum is σ = 727260952320. Its totient is φ = 209464380000.

The previous prime is 394316864761. The next prime is 394316864779. The reversal of 394316864775 is 577468613493.

It is a happy number.

394316864775 is a `hidden beast` number, since 39 + 43 + 16 + 86 + 477 + 5 = 666.

It is not a de Polignac number, because 394316864775 - 2¹¹ = 394316862727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394316864779) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 994267 + ... + 1333116.

It is an arithmetic number, because the mean of its divisors is an integer number (15151269840).

Almost surely, 2^394316864775 is an apocalyptic number.

394316864775 is a deficient number, since it is larger than the sum of its proper divisors (332944087545).

394316864775 is a wasteful number, since it uses less digits than its factorization.

394316864775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327653 (or 2327642 counting only the distinct ones).

The product of its digits is 91445760, while the sum is 63.

The spelling of 394316864775 in words is "three hundred ninety-four billion, three hundred sixteen million, eight hundred sixty-four thousand, seven hundred seventy-five".