396829 has 4 divisors (see below), whose sum is σ = 400860. Its totient is φ = 392800.

The previous prime is 396733. The next prime is 396833. The reversal of 396829 is 928693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 928693 = 17 ⋅54629.

It can be written as a sum of positive squares in 2 ways, for example, as 235225 + 161604 = 485^2 + 402^2 .

It is a cyclic number.

It is not a de Polignac number, because 396829 - 2¹⁷ = 265757 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396029) 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, 1864 + ... + 2065.

It is an arithmetic number, because the mean of its divisors is an integer number (100215).

2³⁹⁶⁸²⁹ is an apocalyptic number.

It is an amenable number.

396829 is a deficient number, since it is larger than the sum of its proper divisors (4031).

396829 is a wasteful number, since it uses less digits than its factorization.

396829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4030.

The product of its digits is 23328, while the sum is 37.

The square root of 396829 is about 629.9436482734. The cubic root of 396829 is about 73.4854121326.

It can be divided in two parts, 396 and 829, that added together give a triangular number (1225 = T₄₉).

The spelling of 396829 in words is "three hundred ninety-six thousand, eight hundred twenty-nine".