8999456538 has 16 divisors (see below), whose sum is σ = 18027997920. Its totient is φ = 2994971376.

The previous prime is 8999456423. The next prime is 8999456561. The reversal of 8999456538 is 8356549998.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1207845 + ... + 1215272.

It is an arithmetic number, because the mean of its divisors is an integer number (1126749870).

Almost surely, 2^8999456538 is an apocalyptic number.

8999456538 is an abundant number, since it is smaller than the sum of its proper divisors (9028541382).

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

8999456538 is a wasteful number, since it uses less digits than its factorization.

8999456538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2423741.

The product of its digits is 83980800, while the sum is 66.

The square root of 8999456538 is about 94865.4654655739. The cubic root of 8999456538 is about 2080.0419538197.

The spelling of 8999456538 in words is "eight billion, nine hundred ninety-nine million, four hundred fifty-six thousand, five hundred thirty-eight".