396378171 has 128 divisors (see below), whose sum is σ = 770457600. Its totient is φ = 195955200.

The previous prime is 396378091. The next prime is 396378187. The reversal of 396378171 is 171873693.

396378171 is a `hidden beast` number, since 3 + 9 + 637 + 8 + 1 + 7 + 1 = 666.

It is not a de Polignac number, because 396378171 - 2⁹ = 396377659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (396378071) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2624946 + ... + 2625096.

It is an arithmetic number, because the mean of its divisors is an integer number (6019200).

Almost surely, 2^396378171 is an apocalyptic number.

396378171 is a deficient number, since it is larger than the sum of its proper divisors (374079429).

396378171 is a wasteful number, since it uses less digits than its factorization.

396378171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 240 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 396378171 is about 19909.2483785802. The cubic root of 396378171 is about 734.5757318208.

The spelling of 396378171 in words is "three hundred ninety-six million, three hundred seventy-eight thousand, one hundred seventy-one".