8999347138 has 16 divisors (see below), whose sum is σ = 13724609184. Its totient is φ = 4424713920.

The previous prime is 8999347129. The next prime is 8999347139. The reversal of 8999347138 is 8317439998.

It is not an unprimeable number, because it can be changed into a prime (8999347139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17706 + ... + 135322.

It is an arithmetic number, because the mean of its divisors is an integer number (857788074).

Almost surely, 2^8999347138 is an apocalyptic number.

8999347138 is a deficient number, since it is larger than the sum of its proper divisors (4725262046).

8999347138 is a wasteful number, since it uses less digits than its factorization.

8999347138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118257.

The product of its digits is 11757312, while the sum is 61.

The square root of 8999347138 is about 94864.8888577855. Note that the first 4 decimals coincide. The cubic root of 8999347138 is about 2080.0335252548.

The spelling of 8999347138 in words is "eight billion, nine hundred ninety-nine million, three hundred forty-seven thousand, one hundred thirty-eight".