396186804 has 72 divisors (see below), whose sum is σ = 1081050152. Its totient is φ = 121616640.

The previous prime is 396186779. The next prime is 396186811. The reversal of 396186804 is 408681693.

396186804 is a `hidden beast` number, since 396 + 186 + 80 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 14062500 + 382124304 = 3750^2 + 19548^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 396186804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 286194 + ... + 287574.

Almost surely, 2^396186804 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 396186804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (540525076).

396186804 is an abundant number, since it is smaller than the sum of its proper divisors (684863348).

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

396186804 is a wasteful number, since it uses less digits than its factorization.

396186804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2017 (or 2012 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 396186804 is about 19904.4418158360. The cubic root of 396186804 is about 734.4574977766.

The spelling of 396186804 in words is "three hundred ninety-six million, one hundred eighty-six thousand, eight hundred four".