394904860002 has 80 divisors (see below), whose sum is σ = 889969611960. Its totient is φ = 130879660032.

The previous prime is 394904859991. The next prime is 394904860027. The reversal of 394904860002 is 200068409493.

394904860002 is a `hidden beast` number, since 39 + 4 + 9 + 0 + 4 + 8 + 600 + 0 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 386770804281 + 8134055721 = 621909^2 + 90189^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 394904860002.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 23181624 + ... + 23198652.

Almost surely, 2^394904860002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394904860002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (444984805980).

394904860002 is an abundant number, since it is smaller than the sum of its proper divisors (495064751958).

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

394904860002 is a wasteful number, since it uses less digits than its factorization.

394904860002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17857 (or 17848 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 394904860002 in words is "three hundred ninety-four billion, nine hundred four million, eight hundred sixty thousand, two".