7984208644 has 12 divisors (see below), whose sum is σ = 14794269084. Its totient is φ = 3757274624.

The previous prime is 7984208641. The next prime is 7984208669. The reversal of 7984208644 is 4468024897.

It can be written as a sum of positive squares in 2 ways, for example, as 6058754244 + 1925454400 = 77838^2 + 43880^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7984208591 and 7984208600.

It is not an unprimeable number, because it can be changed into a prime (7984208641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58707349 + ... + 58707484.

It is an arithmetic number, because the mean of its divisors is an integer number (1232855757).

Almost surely, 2^7984208644 is an apocalyptic number.

It is an amenable number.

7984208644 is a deficient number, since it is larger than the sum of its proper divisors (6810060440).

7984208644 is a wasteful number, since it uses less digits than its factorization.

7984208644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117414854 (or 117414852 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 52.

The square root of 7984208644 is about 89354.3991306528. The cubic root of 7984208644 is about 1998.6831868585.

The spelling of 7984208644 in words is "seven billion, nine hundred eighty-four million, two hundred eight thousand, six hundred forty-four".