7987956140 has 12 divisors (see below), whose sum is σ = 16774707936. Its totient is φ = 3195182448.

The previous prime is 7987956091. The next prime is 7987956169. The reversal of 7987956140 is 416597897.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199698884 + ... + 199698923.

It is an arithmetic number, because the mean of its divisors is an integer number (1397892328).

Almost surely, 2^7987956140 is an apocalyptic number.

It is an amenable number.

7987956140 is an abundant number, since it is smaller than the sum of its proper divisors (8786751796).

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

7987956140 is a wasteful number, since it uses less digits than its factorization.

7987956140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399397816 (or 399397814 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 56.

The square root of 7987956140 is about 89375.3665167310. The cubic root of 7987956140 is about 1998.9958409166.

The spelling of 7987956140 in words is "seven billion, nine hundred eighty-seven million, nine hundred fifty-six thousand, one hundred forty".