396791 has 4 divisors (see below), whose sum is σ = 398112. Its totient is φ = 395472.

The previous prime is 396733. The next prime is 396833. The reversal of 396791 is 197693.

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 396791 - 2¹⁰ = 395767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35 + ... + 891.

It is an arithmetic number, because the mean of its divisors is an integer number (99528).

2³⁹⁶⁷⁹¹ is an apocalyptic number.

396791 is a deficient number, since it is larger than the sum of its proper divisors (1321).

396791 is an equidigital number, since it uses as much as digits as its factorization.

396791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320.

The product of its digits is 10206, while the sum is 35.

The square root of 396791 is about 629.9134861233. The cubic root of 396791 is about 73.4830664246.

It can be divided in two parts, 396 and 791, that multiplied together give a triangular number (313236 = T₇₉₁).

The spelling of 396791 in words is "three hundred ninety-six thousand, seven hundred ninety-one".