8489979387 has 16 divisors (see below), whose sum is σ = 12640960000. Its totient is φ = 5631540552.

The previous prime is 8489979353. The next prime is 8489979413. The reversal of 8489979387 is 7839799848.

8489979387 is a `hidden beast` number, since 84 + 89 + 97 + 9 + 387 = 666.

It is not a de Polignac number, because 8489979387 - 2²³ = 8481590779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8489979287) 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, 784687 + ... + 795432.

It is an arithmetic number, because the mean of its divisors is an integer number (790060000).

Almost surely, 2^8489979387 is an apocalyptic number.

8489979387 is a deficient number, since it is larger than the sum of its proper divisors (4150980613).

8489979387 is a wasteful number, since it uses less digits than its factorization.

8489979387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580327 (or 1580321 counting only the distinct ones).

The product of its digits is 219469824, while the sum is 72.

The square root of 8489979387 is about 92141.0841427428. The cubic root of 8489979387 is about 2040.0252613654.

The spelling of 8489979387 in words is "eight billion, four hundred eighty-nine million, nine hundred seventy-nine thousand, three hundred eighty-seven".