7947940992 has 256 divisors, whose sum is σ = 22487001600. Its totient is φ = 2484338688.

The previous prime is 7947940961. The next prime is 7947941009. The reversal of 7947940992 is 2990497497.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81937488 + ... + 81937584.

It is an arithmetic number, because the mean of its divisors is an integer number (87839850).

Almost surely, 2^7947940992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7947940992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11243500800).

7947940992 is an abundant number, since it is smaller than the sum of its proper divisors (14539060608).

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

7947940992 is a wasteful number, since it uses less digits than its factorization.

7947940992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 10287648, while the sum is 60.

The square root of 7947940992 is about 89151.2254094132. The cubic root of 7947940992 is about 1995.6523049557.

The spelling of 7947940992 in words is "seven billion, nine hundred forty-seven million, nine hundred forty thousand, nine hundred ninety-two".