7898989876 has 12 divisors (see below), whose sum is σ = 13824099072. Its totient is φ = 3949247288.

The previous prime is 7898989867. The next prime is 7898989919. The reversal of 7898989876 is 6789898987.

7898989876 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a super-2 number, since 2×7898989876² (a number of 21 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 7898989796 and 7898989805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22701 + ... + 127723.

It is an arithmetic number, because the mean of its divisors is an integer number (1152008256).

Almost surely, 2^7898989876 is an apocalyptic number.

It is an amenable number.

7898989876 is a deficient number, since it is larger than the sum of its proper divisors (5925109196).

7898989876 is a wasteful number, since it uses less digits than its factorization.

7898989876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123830 (or 123828 counting only the distinct ones).

The product of its digits is 877879296, while the sum is 79.

The square root of 7898989876 is about 88876.2616000471. The cubic root of 7898989876 is about 1991.5468118076.

The spelling of 7898989876 in words is "seven billion, eight hundred ninety-eight million, nine hundred eighty-nine thousand, eight hundred seventy-six".