394606434823 has 16 divisors (see below), whose sum is σ = 420763136256. Its totient is φ = 369408280320.

The previous prime is 394606434809. The next prime is 394606434839. The reversal of 394606434823 is 328434606493.

It is a cyclic number.

It is not a de Polignac number, because 394606434823 - 2⁹ = 394606434311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394606434853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 795886 + ... + 1192747.

It is an arithmetic number, because the mean of its divisors is an integer number (26297696016).

Almost surely, 2^394606434823 is an apocalyptic number.

394606434823 is a deficient number, since it is larger than the sum of its proper divisors (26156701433).

394606434823 is a wasteful number, since it uses less digits than its factorization.

394606434823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988874.

The product of its (nonzero) digits is 8957952, while the sum is 52.

The spelling of 394606434823 in words is "three hundred ninety-four billion, six hundred six million, four hundred thirty-four thousand, eight hundred twenty-three".