394882981356 has 24 divisors (see below), whose sum is σ = 975593248560. Its totient is φ = 123884856832.

The previous prime is 394882981351. The next prime is 394882981379. The reversal of 394882981356 is 653189288493.

It is not an unprimeable number, because it can be changed into a prime (394882981351) 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 7 ways as a sum of consecutive naturals, for example, 967850241 + ... + 967850648.

It is an arithmetic number, because the mean of its divisors is an integer number (40649718690).

Almost surely, 2^394882981356 is an apocalyptic number.

It is an amenable number.

394882981356 is an abundant number, since it is smaller than the sum of its proper divisors (580710267204).

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

394882981356 is a wasteful number, since it uses less digits than its factorization.

394882981356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1935700913 (or 1935700911 counting only the distinct ones).

The product of its digits is 89579520, while the sum is 66.

The spelling of 394882981356 in words is "three hundred ninety-four billion, eight hundred eighty-two million, nine hundred eighty-one thousand, three hundred fifty-six".