396831 has 16 divisors (see below), whose sum is σ = 580608. Its totient is φ = 240000.

The previous prime is 396733. The next prime is 396833. The reversal of 396831 is 138693.

It is not a de Polignac number, because 396831 - 2⁷ = 396703 is a prime.

It is a super-2 number, since 2×396831² = 314949685122, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1456 + ... + 1706.

It is an arithmetic number, because the mean of its divisors is an integer number (36288).

2³⁹⁶⁸³¹ is an apocalyptic number.

396831 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

396831 is a deficient number, since it is larger than the sum of its proper divisors (183777).

396831 is a wasteful number, since it uses less digits than its factorization.

396831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302.

The product of its digits is 3888, while the sum is 30.

The square root of 396831 is about 629.9452357150. The cubic root of 396831 is about 73.4855355867.

The spelling of 396831 in words is "three hundred ninety-six thousand, eight hundred thirty-one".