394433309959 has 12 divisors (see below), whose sum is σ = 427539427392. Its totient is φ = 363724732800.

The previous prime is 394433309947. The next prime is 394433309969. The reversal of 394433309959 is 959903334493.

It is a de Polignac number, because none of the positive numbers 2^k-394433309959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 394433309897 and 394433309906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394433309969) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1010082 + ... + 1345039.

It is an arithmetic number, because the mean of its divisors is an integer number (35628285616).

Almost surely, 2^394433309959 is an apocalyptic number.

394433309959 is a deficient number, since it is larger than the sum of its proper divisors (33106117433).

394433309959 is a wasteful number, since it uses less digits than its factorization.

394433309959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356138 (or 2356125 counting only the distinct ones).

The product of its (nonzero) digits is 42515280, while the sum is 61.

The spelling of 394433309959 in words is "three hundred ninety-four billion, four hundred thirty-three million, three hundred nine thousand, nine hundred fifty-nine".