394744711284 has 1152 divisors, whose sum is σ = 1463519232000. Its totient is φ = 90531302400.

The previous prime is 394744711279. The next prime is 394744711373. The reversal of 394744711284 is 482117447493.

394744711284 is a `hidden beast` number, since 3 + 9 + 4 + 7 + 447 + 112 + 84 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 394744711284.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 994318974 + ... + 994319370.

It is an arithmetic number, because the mean of its divisors is an integer number (1270416000).

Almost surely, 2^394744711284 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 394744711284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (731759616000).

394744711284 is an abundant number, since it is smaller than the sum of its proper divisors (1068774520716).

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

394744711284 is a wasteful number, since it uses less digits than its factorization.

394744711284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514 (or 499 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 54.

The spelling of 394744711284 in words is "three hundred ninety-four billion, seven hundred forty-four million, seven hundred eleven thousand, two hundred eighty-four".