7926397688 has 32 divisors (see below), whose sum is σ = 16736094720. Its totient is φ = 3486684000.

The previous prime is 7926397649. The next prime is 7926397709. The reversal of 7926397688 is 8867936297.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1450058 + ... + 1455513.

It is an arithmetic number, because the mean of its divisors is an integer number (523002960).

Almost surely, 2^7926397688 is an apocalyptic number.

It is an amenable number.

7926397688 is an abundant number, since it is smaller than the sum of its proper divisors (8809697032).

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

7926397688 is a wasteful number, since it uses less digits than its factorization.

7926397688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905619 (or 2905615 counting only the distinct ones).

The product of its digits is 54867456, while the sum is 65.

The square root of 7926397688 is about 89030.3189256334. The cubic root of 7926397688 is about 1993.8475671923.

The spelling of 7926397688 in words is "seven billion, nine hundred twenty-six million, three hundred ninety-seven thousand, six hundred eighty-eight".