396779 has 4 divisors (see below), whose sum is σ = 398040. Its totient is φ = 395520.

The previous prime is 396733. The next prime is 396833. The reversal of 396779 is 977693.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 396779 - 2⁸ = 396523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299 + ... + 939.

It is an arithmetic number, because the mean of its divisors is an integer number (99510).

2³⁹⁶⁷⁷⁹ is an apocalyptic number.

396779 is a deficient number, since it is larger than the sum of its proper divisors (1261).

396779 is an equidigital number, since it uses as much as digits as its factorization.

396779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260.

The product of its digits is 71442, while the sum is 41.

The square root of 396779 is about 629.9039609337. The cubic root of 396779 is about 73.4823256436.

The spelling of 396779 in words is "three hundred ninety-six thousand, seven hundred seventy-nine".