396808271 has 10 divisors (see below), whose sum is σ = 421697232. Its totient is φ = 373388000.

The previous prime is 396808253. The next prime is 396808289. The reversal of 396808271 is 172808693.

It is an interprime number because it is at equal distance from previous prime (396808253) and next prime (396808289).

It is a de Polignac number, because none of the positive numbers 2^k-396808271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396808211) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 81146 + ... + 85896.

Almost surely, 2^396808271 is an apocalyptic number.

396808271 is a deficient number, since it is larger than the sum of its proper divisors (24888961).

396808271 is an frugal number, since it uses more digits than its factorization.

396808271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4819 (or 4768 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 396808271 is about 19920.0469627960. The cubic root of 396808271 is about 734.8413256745.

The spelling of 396808271 in words is "three hundred ninety-six million, eight hundred eight thousand, two hundred seventy-one".