394985584868 has 48 divisors (see below), whose sum is σ = 808468510080. Its totient is φ = 165317048064.

The previous prime is 394985584813. The next prime is 394985584871. The reversal of 394985584868 is 868485589493.

It is a super-2 number, since 2×394985584868² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9043130 + ... + 9086702.

It is an arithmetic number, because the mean of its divisors is an integer number (16843093960).

Almost surely, 2^394985584868 is an apocalyptic number.

It is an amenable number.

394985584868 is an abundant number, since it is smaller than the sum of its proper divisors (413482925212).

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

394985584868 is a wasteful number, since it uses less digits than its factorization.

394985584868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51156 (or 51154 counting only the distinct ones).

The product of its digits is 2388787200, while the sum is 77.

The spelling of 394985584868 in words is "three hundred ninety-four billion, nine hundred eighty-five million, five hundred eighty-four thousand, eight hundred sixty-eight".