7944388776 has 48 divisors (see below), whose sum is σ = 21549434400. Its totient is φ = 2644021152.

The previous prime is 7944388747. The next prime is 7944388783. The reversal of 7944388776 is 6778834497.

It is a super-2 number, since 2×7944388776² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38686 + ... + 131853.

It is an arithmetic number, because the mean of its divisors is an integer number (448946550).

Almost surely, 2^7944388776 is an apocalyptic number.

It is an amenable number.

7944388776 is an abundant number, since it is smaller than the sum of its proper divisors (13605045624).

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

7944388776 is a wasteful number, since it uses less digits than its factorization.

7944388776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171198 (or 171191 counting only the distinct ones).

The product of its digits is 56899584, while the sum is 63.

The square root of 7944388776 is about 89131.3007646584. The cubic root of 7944388776 is about 1995.3549514473.

The spelling of 7944388776 in words is "seven billion, nine hundred forty-four million, three hundred eighty-eight thousand, seven hundred seventy-six".