8397997938 has 48 divisors (see below), whose sum is σ = 20333974752. Its totient is φ = 2482776000.

The previous prime is 8397997921. The next prime is 8397997939.

8397997938 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (8397997939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 509128 + ... + 525363.

It is an arithmetic number, because the mean of its divisors is an integer number (423624474).

Almost surely, 2^8397997938 is an apocalyptic number.

8397997938 is an abundant number, since it is smaller than the sum of its proper divisors (11935976814).

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

8397997938 is a wasteful number, since it uses less digits than its factorization.

8397997938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034551 (or 1034548 counting only the distinct ones).

The product of its digits is 185177664, while the sum is 72.

The square root of 8397997938 is about 91640.5911045973. The cubic root of 8397997938 is about 2032.6312017083.

The spelling of 8397997938 in words is "eight billion, three hundred ninety-seven million, nine hundred ninety-seven thousand, nine hundred thirty-eight".