7990789764 has 48 divisors (see below), whose sum is σ = 18773314560. Its totient is φ = 2645352960.

The previous prime is 7990789757. The next prime is 7990789783. The reversal of 7990789764 is 4679870997.

It is a junction number, because it is equal to n+sod(n) for n = 7990789695 and 7990789704.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1121437 + ... + 1128539.

It is an arithmetic number, because the mean of its divisors is an integer number (391110720).

Almost surely, 2^7990789764 is an apocalyptic number.

It is an amenable number.

7990789764 is an abundant number, since it is smaller than the sum of its proper divisors (10782524796).

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

7990789764 is a wasteful number, since it uses less digits than its factorization.

7990789764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7740 (or 7738 counting only the distinct ones).

The product of its (nonzero) digits is 48009024, while the sum is 66.

The square root of 7990789764 is about 89391.2174880732. The cubic root of 7990789764 is about 1999.2321856016.

The spelling of 7990789764 in words is "seven billion, nine hundred ninety million, seven hundred eighty-nine thousand, seven hundred sixty-four".