396823271 has 4 divisors (see below), whose sum is σ = 427348152. Its totient is φ = 366298392.

The previous prime is 396823267. The next prime is 396823351. The reversal of 396823271 is 172328693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 172328693 = 9551 ⋅18043.

It is a cyclic number.

It is not a de Polignac number, because 396823271 - 2² = 396823267 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 (396820271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15262421 + ... + 15262446.

It is an arithmetic number, because the mean of its divisors is an integer number (106837038).

Almost surely, 2^396823271 is an apocalyptic number.

396823271 is a deficient number, since it is larger than the sum of its proper divisors (30524881).

396823271 is a wasteful number, since it uses less digits than its factorization.

396823271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30524880.

The product of its digits is 108864, while the sum is 41.

The square root of 396823271 is about 19920.4234643744. The cubic root of 396823271 is about 734.8505849581.

The spelling of 396823271 in words is "three hundred ninety-six million, eight hundred twenty-three thousand, two hundred seventy-one".