397863671 has 8 divisors (see below), whose sum is σ = 403368000. Its totient is φ = 392371200.

The previous prime is 397863617. The next prime is 397863679. The reversal of 397863671 is 176368793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 397863671 - 2²⁶ = 330754807 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 (397863679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80471 + ... + 85271.

It is an arithmetic number, because the mean of its divisors is an integer number (50421000).

Almost surely, 2^397863671 is an apocalyptic number.

397863671 is a deficient number, since it is larger than the sum of its proper divisors (5504329).

397863671 is a wasteful number, since it uses less digits than its factorization.

397863671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5929.

The product of its digits is 1143072, while the sum is 50.

The square root of 397863671 is about 19946.5202729699. The cubic root of 397863671 is about 735.4922403369.

The spelling of 397863671 in words is "three hundred ninety-seven million, eight hundred sixty-three thousand, six hundred seventy-one".