396791304 has 128 divisors (see below), whose sum is σ = 1234141440. Its totient is φ = 103514112.

The previous prime is 396791303. The next prime is 396791309. The reversal of 396791304 is 403197693.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (396791303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 210912 + ... + 212784.

It is an arithmetic number, because the mean of its divisors is an integer number (9641730).

Almost surely, 2^396791304 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 396791304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (617070720).

396791304 is an abundant number, since it is smaller than the sum of its proper divisors (837350136).

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

396791304 is a wasteful number, since it uses less digits than its factorization.

396791304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999 (or 1995 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 396791304 is about 19919.6210807334. The cubic root of 396791304 is about 734.8308519089.

The spelling of 396791304 in words is "three hundred ninety-six million, seven hundred ninety-one thousand, three hundred four".