396271971 has 6 divisors (see below), whose sum is σ = 572392860. Its totient is φ = 264181308.

The previous prime is 396271949. The next prime is 396271973. The reversal of 396271971 is 179172693.

396271971 is a `hidden beast` number, since 3 + 9 + 627 + 19 + 7 + 1 = 666.

It is not a de Polignac number, because 396271971 - 2¹⁵ = 396239203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (396271973) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22015101 + ... + 22015118.

It is an arithmetic number, because the mean of its divisors is an integer number (95398810).

Almost surely, 2^396271971 is an apocalyptic number.

396271971 is a deficient number, since it is larger than the sum of its proper divisors (176120889).

396271971 is a wasteful number, since it uses less digits than its factorization.

396271971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44030225 (or 44030222 counting only the distinct ones).

The product of its digits is 142884, while the sum is 45.

The square root of 396271971 is about 19906.5810977174. The cubic root of 396271971 is about 734.5101219928.

The spelling of 396271971 in words is "three hundred ninety-six million, two hundred seventy-one thousand, nine hundred seventy-one".