394683616667 has 4 divisors (see below), whose sum is σ = 394697897496. Its totient is φ = 394669335840.

The previous prime is 394683616609. The next prime is 394683616687. The reversal of 394683616667 is 766616386493.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 394683616667 - 2¹⁰ = 394683615643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394683616687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7098878 + ... + 7154259.

It is an arithmetic number, because the mean of its divisors is an integer number (98674474374).

Almost surely, 2^394683616667 is an apocalyptic number.

394683616667 is a deficient number, since it is larger than the sum of its proper divisors (14280829).

394683616667 is a wasteful number, since it uses less digits than its factorization.

394683616667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14280828.

The product of its digits is 141087744, while the sum is 65.

The spelling of 394683616667 in words is "three hundred ninety-four billion, six hundred eighty-three million, six hundred sixteen thousand, six hundred sixty-seven".