7947947752 has 16 divisors (see below), whose sum is σ = 15049952100. Its totient is φ = 3934627200.

The previous prime is 7947947717. The next prime is 7947947771. The reversal of 7947947752 is 2577497497.

It can be written as a sum of positive squares in 2 ways, for example, as 7574917156 + 373030596 = 87034^2 + 19314^2 .

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, 4917477 + ... + 4919092.

Almost surely, 2^7947947752 is an apocalyptic number.

It is an amenable number.

7947947752 is a deficient number, since it is larger than the sum of its proper divisors (7102004348).

7947947752 is a wasteful number, since it uses less digits than its factorization.

7947947752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9836676 (or 9836672 counting only the distinct ones).

The product of its digits is 31116960, while the sum is 61.

The square root of 7947947752 is about 89151.2633225127. The cubic root of 7947947752 is about 1995.6528707461.

The spelling of 7947947752 in words is "seven billion, nine hundred forty-seven million, nine hundred forty-seven thousand, seven hundred fifty-two".