7989470872 has 32 divisors (see below), whose sum is σ = 15139068480. Its totient is φ = 3952441600.

The previous prime is 7989470857. The next prime is 7989470893. The reversal of 7989470872 is 2780749897.

It is a self number, because there is not a number n which added to its sum of digits gives 7989470872.

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 7 ways as a sum of consecutive naturals, for example, 1664508 + ... + 1669300.

It is an arithmetic number, because the mean of its divisors is an integer number (473095890).

Almost surely, 2^7989470872 is an apocalyptic number.

It is an amenable number.

7989470872 is a deficient number, since it is larger than the sum of its proper divisors (7149597608).

7989470872 is a wasteful number, since it uses less digits than its factorization.

7989470872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6963 (or 6959 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 61.

The square root of 7989470872 is about 89383.8401054687. The cubic root of 7989470872 is about 1999.1221874456.

The spelling of 7989470872 in words is "seven billion, nine hundred eighty-nine million, four hundred seventy thousand, eight hundred seventy-two".