397868384 has 24 divisors (see below), whose sum is σ = 808573248. Its totient is φ = 192516480.

The previous prime is 397868381. The next prime is 397868407. The reversal of 397868384 is 483868793.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397868381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199547 + ... + 201530.

It is an arithmetic number, because the mean of its divisors is an integer number (33690552).

Almost surely, 2^397868384 is an apocalyptic number.

It is an amenable number.

397868384 is an abundant number, since it is smaller than the sum of its proper divisors (410704864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397868384 is a wasteful number, since it uses less digits than its factorization.

397868384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401118 (or 401110 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 56.

The square root of 397868384 is about 19946.6384135272. The cubic root of 397868384 is about 735.4951444818.

The spelling of 397868384 in words is "three hundred ninety-seven million, eight hundred sixty-eight thousand, three hundred eighty-four".