396171 has 20 divisors (see below), whose sum is σ = 608872. Its totient is φ = 256608.

The previous prime is 396157. The next prime is 396173. The reversal of 396171 is 171693.

It is not a de Polignac number, because 396171 - 2⁶ = 396107 is a prime.

It is a super-2 number, since 2×396171² = 313902922482, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396173) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5391 + ... + 5463.

2³⁹⁶¹⁷¹ is an apocalyptic number.

396171 is a deficient number, since it is larger than the sum of its proper divisors (212701).

396171 is an equidigital number, since it uses as much as digits as its factorization.

396171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 143 counting only the distinct ones).

The product of its digits is 1134, while the sum is 27.

The square root of 396171 is about 629.4211626566. The cubic root of 396171 is about 73.4447731743. Note that the first 3 decimals are identical.

The spelling of 396171 in words is "three hundred ninety-six thousand, one hundred seventy-one".