7987289740 has 48 divisors (see below), whose sum is σ = 17241281568. Its totient is φ = 3106847744.

The previous prime is 7987289731. The next prime is 7987289743. The reversal of 7987289740 is 479827897.

It is not an unprimeable number, because it can be changed into a prime (7987289743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86439 + ... + 153121.

It is an arithmetic number, because the mean of its divisors is an integer number (359193366).

Almost surely, 2^7987289740 is an apocalyptic number.

It is an amenable number.

7987289740 is an abundant number, since it is smaller than the sum of its proper divisors (9253991828).

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

7987289740 is a wasteful number, since it uses less digits than its factorization.

7987289740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66858 (or 66856 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 61.

The square root of 7987289740 is about 89371.6383423735. The cubic root of 7987289740 is about 1998.9402502311.

The spelling of 7987289740 in words is "seven billion, nine hundred eighty-seven million, two hundred eighty-nine thousand, seven hundred forty".