8723487140 has 12 divisors (see below), whose sum is σ = 18319323036. Its totient is φ = 3489394848.

The previous prime is 8723487121. The next prime is 8723487161. The reversal of 8723487140 is 417843278.

It can be written as a sum of positive squares in 2 ways, for example, as 3844744036 + 4878743104 = 62006^2 + 69848^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8723487091 and 8723487100.

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, 218087159 + ... + 218087198.

It is an arithmetic number, because the mean of its divisors is an integer number (1526610253).

Almost surely, 2^8723487140 is an apocalyptic number.

It is an amenable number.

8723487140 is an abundant number, since it is smaller than the sum of its proper divisors (9595835896).

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

8723487140 is a wasteful number, since it uses less digits than its factorization.

8723487140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436174366 (or 436174364 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 44.

The square root of 8723487140 is about 93399.6099563590. The cubic root of 8723487140 is about 2058.5592669032.

The spelling of 8723487140 in words is "eight billion, seven hundred twenty-three million, four hundred eighty-seven thousand, one hundred forty".