7997730971 has 16 divisors (see below), whose sum is σ = 8933299200. Its totient is φ = 7115568768.

The previous prime is 7997730953. The next prime is 7997730989. The reversal of 7997730971 is 1790377997.

It is an interprime number because it is at equal distance from previous prime (7997730953) and next prime (7997730989).

It is a cyclic number.

It is not a de Polignac number, because 7997730971 - 2⁶ = 7997730907 is a prime.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7997730971.

It is not an unprimeable number, because it can be changed into a prime (7997730931) 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 15 ways as a sum of consecutive naturals, for example, 122810 + ... + 176288.

It is an arithmetic number, because the mean of its divisors is an integer number (558331200).

Almost surely, 2^7997730971 is an apocalyptic number.

7997730971 is a deficient number, since it is larger than the sum of its proper divisors (935568229).

7997730971 is a wasteful number, since it uses less digits than its factorization.

7997730971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53978.

The product of its (nonzero) digits is 5250987, while the sum is 59.

The square root of 7997730971 is about 89430.0339427421. The cubic root of 7997730971 is about 1999.8108963705.

The spelling of 7997730971 in words is "seven billion, nine hundred ninety-seven million, seven hundred thirty thousand, nine hundred seventy-one".