8739947144 has 16 divisors (see below), whose sum is σ = 16584840720. Its totient is φ = 4317322960.

The previous prime is 8739947141. The next prime is 8739947179. The reversal of 8739947144 is 4417499378.

It is a self number, because there is not a number n which added to its sum of digits gives 8739947144.

It is not an unprimeable number, because it can be changed into a prime (8739947141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6580622 + ... + 6581949.

It is an arithmetic number, because the mean of its divisors is an integer number (1036552545).

Almost surely, 2^8739947144 is an apocalyptic number.

It is an amenable number.

8739947144 is a deficient number, since it is larger than the sum of its proper divisors (7844893576).

8739947144 is a wasteful number, since it uses less digits than its factorization.

8739947144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13162660 (or 13162656 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 56.

The square root of 8739947144 is about 93487.6844509479. The cubic root of 8739947144 is about 2059.8531915361.

The spelling of 8739947144 in words is "eight billion, seven hundred thirty-nine million, nine hundred forty-seven thousand, one hundred forty-four".