394009981134 has 64 divisors (see below), whose sum is σ = 996304084992. Its totient is φ = 100898834400.

The previous prime is 394009981109. The next prime is 394009981147. The reversal of 394009981134 is 431189900493.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5973082 + ... + 6038685.

It is an arithmetic number, because the mean of its divisors is an integer number (15567251328).

Almost surely, 2^394009981134 is an apocalyptic number.

394009981134 is an abundant number, since it is smaller than the sum of its proper divisors (602294103858).

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

394009981134 is a wasteful number, since it uses less digits than its factorization.

394009981134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12011861.

The product of its (nonzero) digits is 839808, while the sum is 51.

The spelling of 394009981134 in words is "three hundred ninety-four billion, nine million, nine hundred eighty-one thousand, one hundred thirty-four".