394444444394 has 64 divisors (see below), whose sum is σ = 798795309312. Its totient is φ = 141074265600.

The previous prime is 394444444391. The next prime is 394444444399. The reversal of 394444444394 is 493444444493.

It is not an unprimeable number, because it can be changed into a prime (394444444391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 181907 + ... + 906630.

It is an arithmetic number, because the mean of its divisors is an integer number (12481176708).

Almost surely, 2^394444444394 is an apocalyptic number.

394444444394 is an abundant number, since it is smaller than the sum of its proper divisors (404350864918).

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

394444444394 is a wasteful number, since it uses less digits than its factorization.

394444444394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088751.

The product of its digits is 47775744, while the sum is 56.

Subtracting 394444444394 from its reverse (493444444493), we obtain a palindrome (99000000099).

It can be divided in two parts, 394444 and 444394, that added together give a palindrome (838838).

The spelling of 394444444394 in words is "three hundred ninety-four billion, four hundred forty-four million, four hundred forty-four thousand, three hundred ninety-four".