396804312 has 64 divisors (see below), whose sum is σ = 1109349600. Its totient is φ = 131414400.

The previous prime is 396804311. The next prime is 396804319. The reversal of 396804312 is 213408693.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396804311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28062 + ... + 39762.

Almost surely, 2^396804312 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 396804312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (554674800).

396804312 is an abundant number, since it is smaller than the sum of its proper divisors (712545288).

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

396804312 is a wasteful number, since it uses less digits than its factorization.

396804312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11873 (or 11863 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 396804312 is about 19919.9475902925. The cubic root of 396804312 is about 734.8388818020.

The spelling of 396804312 in words is "three hundred ninety-six million, eight hundred four thousand, three hundred twelve".