394839320418 has 32 divisors (see below), whose sum is σ = 887992056000. Its totient is φ = 130027405248.

The previous prime is 394839320417. The next prime is 394839320423. The reversal of 394839320418 is 814023938493.

394839320418 is a `hidden beast` number, since 3 + 9 + 48 + 393 + 204 + 1 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (394839320413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44042743 + ... + 44051706.

It is an arithmetic number, because the mean of its divisors is an integer number (27749751750).

Almost surely, 2^394839320418 is an apocalyptic number.

394839320418 is an abundant number, since it is smaller than the sum of its proper divisors (493152735582).

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

394839320418 is a wasteful number, since it uses less digits than its factorization.

394839320418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88094543 (or 88094537 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The spelling of 394839320418 in words is "three hundred ninety-four billion, eight hundred thirty-nine million, three hundred twenty thousand, four hundred eighteen".