396784 has 10 divisors (see below), whose sum is σ = 768800. Its totient is φ = 198384.

The previous prime is 396733. The next prime is 396833. The reversal of 396784 is 487693.

396784 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

396784 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12384 + ... + 12415.

It is an arithmetic number, because the mean of its divisors is an integer number (76880).

2³⁹⁶⁷⁸⁴ is an apocalyptic number.

It is an amenable number.

396784 is a deficient number, since it is larger than the sum of its proper divisors (372016).

396784 is a wasteful number, since it uses less digits than its factorization.

396784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24807 (or 24801 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 396784 is about 629.9079297802. The cubic root of 396784 is about 73.4826343042.

Subtracting 396784 from its reverse (487693), we obtain a palindrome (90909).

The spelling of 396784 in words is "three hundred ninety-six thousand, seven hundred eighty-four".