397191168 has 192 divisors, whose sum is σ = 1285502400. Its totient is φ = 120176640.

The previous prime is 397191101. The next prime is 397191227. The reversal of 397191168 is 861191793.

It is a tau number, because it is divible by the number of its divisors (192).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 607930 + ... + 608582.

It is an arithmetic number, because the mean of its divisors is an integer number (6695325).

Almost surely, 2^397191168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397191168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (642751200).

397191168 is an abundant number, since it is smaller than the sum of its proper divisors (888311232).

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

397191168 is a wasteful number, since it uses less digits than its factorization.

397191168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695 (or 669 counting only the distinct ones).

The product of its digits is 81648, while the sum is 45.

The square root of 397191168 is about 19929.6554912522. The cubic root of 397191168 is about 735.0776094642.

The spelling of 397191168 in words is "three hundred ninety-seven million, one hundred ninety-one thousand, one hundred sixty-eight".