394472739776 has 56 divisors (see below), whose sum is σ = 802312201824. Its totient is φ = 192320593920.

The previous prime is 394472739769. The next prime is 394472739803. The reversal of 394472739776 is 677937274493.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4874621 + ... + 4954883.

It is an arithmetic number, because the mean of its divisors is an integer number (14327003604).

Almost surely, 2^394472739776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394472739776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (401156100912).

394472739776 is an abundant number, since it is smaller than the sum of its proper divisors (407839462048).

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

394472739776 is a wasteful number, since it uses less digits than its factorization.

394472739776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82189 (or 82179 counting only the distinct ones).

The product of its digits is 336063168, while the sum is 68.

The spelling of 394472739776 in words is "three hundred ninety-four billion, four hundred seventy-two million, seven hundred thirty-nine thousand, seven hundred seventy-six".