8999425838 has 32 divisors (see below), whose sum is σ = 14819565600. Its totient is φ = 4073642496.

The previous prime is 8999425837. The next prime is 8999425859. The reversal of 8999425838 is 8385249998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8999425837) 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, 326498 + ... + 352986.

It is an arithmetic number, because the mean of its divisors is an integer number (463111425).

Almost surely, 2^8999425838 is an apocalyptic number.

8999425838 is a deficient number, since it is larger than the sum of its proper divisors (5820139762).

8999425838 is a wasteful number, since it uses less digits than its factorization.

8999425838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26756.

The product of its digits is 44789760, while the sum is 65.

The square root of 8999425838 is about 94865.3036573436. The cubic root of 8999425838 is about 2080.0395885895.

The spelling of 8999425838 in words is "eight billion, nine hundred ninety-nine million, four hundred twenty-five thousand, eight hundred thirty-eight".