396390312 has 48 divisors (see below), whose sum is σ = 1130064000. Its totient is φ = 125175456.

The previous prime is 396390311. The next prime is 396390391. The reversal of 396390312 is 213093693.

It is a happy number.

396390312 is a `hidden beast` number, since 3 + 9 + 639 + 0 + 3 + 12 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (396390311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143512 + ... + 146247.

It is an arithmetic number, because the mean of its divisors is an integer number (23543000).

Almost surely, 2^396390312 is an apocalyptic number.

It is an amenable number.

396390312 is an abundant number, since it is smaller than the sum of its proper divisors (733673688).

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

396390312 is a wasteful number, since it uses less digits than its factorization.

396390312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289790 (or 289783 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 36.

The square root of 396390312 is about 19909.5532847927. The cubic root of 396390312 is about 734.5832317233.

The spelling of 396390312 in words is "three hundred ninety-six million, three hundred ninety thousand, three hundred twelve".