397043530 has 48 divisors (see below), whose sum is σ = 777911040. Its totient is φ = 145838784.

The previous prime is 397043497. The next prime is 397043533. The reversal of 397043530 is 35340793.

It is not an unprimeable number, because it can be changed into a prime (397043533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 403419 + ... + 404401.

It is an arithmetic number, because the mean of its divisors is an integer number (16206480).

Almost surely, 2^397043530 is an apocalyptic number.

397043530 is a deficient number, since it is larger than the sum of its proper divisors (380867510).

397043530 is a wasteful number, since it uses less digits than its factorization.

397043530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255 (or 1242 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 34.

The square root of 397043530 is about 19925.9511692667. The cubic root of 397043530 is about 734.9865208011.

It can be divided in two parts, 39704 and 3530, that added together give a palindrome (43234).

The spelling of 397043530 in words is "three hundred ninety-seven million, forty-three thousand, five hundred thirty".