397846172 has 12 divisors (see below), whose sum is σ = 737185680. Its totient is φ = 187221696.

The previous prime is 397846153. The next prime is 397846181. The reversal of 397846172 is 271648793.

It is a congruent number.

It is an unprimeable number.

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, 2925272 + ... + 2925407.

It is an arithmetic number, because the mean of its divisors is an integer number (61432140).

Almost surely, 2^397846172 is an apocalyptic number.

It is an amenable number.

397846172 is a deficient number, since it is larger than the sum of its proper divisors (339339508).

397846172 is a wasteful number, since it uses less digits than its factorization.

397846172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5850700 (or 5850698 counting only the distinct ones).

The product of its digits is 508032, while the sum is 47.

The square root of 397846172 is about 19946.0816202080. The cubic root of 397846172 is about 735.4814572736.

The spelling of 397846172 in words is "three hundred ninety-seven million, eight hundred forty-six thousand, one hundred seventy-two".