397504875 has 32 divisors (see below), whose sum is σ = 679348800. Its totient is φ = 206265600.

The previous prime is 397504873. The next prime is 397504879. The reversal of 397504875 is 578405793.

It is not a de Polignac number, because 397504875 - 2¹ = 397504873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397504873) 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 31 ways as a sum of consecutive naturals, for example, 450 + ... + 28199.

It is an arithmetic number, because the mean of its divisors is an integer number (21229650).

Almost surely, 2^397504875 is an apocalyptic number.

397504875 is a deficient number, since it is larger than the sum of its proper divisors (281843925).

397504875 is a wasteful number, since it uses less digits than its factorization.

397504875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28704 (or 28694 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 48.

The square root of 397504875 is about 19937.5242946560. The cubic root of 397504875 is about 735.2710833098.

The spelling of 397504875 in words is "three hundred ninety-seven million, five hundred four thousand, eight hundred seventy-five".