9989787148 has 24 divisors (see below), whose sum is σ = 19240194960. Its totient is φ = 4500625920.

The previous prime is 9989787121. The next prime is 9989787173. The reversal of 9989787148 is 8417879899.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 999633 + ... + 1009576.

It is an arithmetic number, because the mean of its divisors is an integer number (801674790).

Almost surely, 2^9989787148 is an apocalyptic number.

It is an amenable number.

9989787148 is a deficient number, since it is larger than the sum of its proper divisors (9250407812).

9989787148 is a wasteful number, since it uses less digits than its factorization.

9989787148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009337 (or 2009335 counting only the distinct ones).

The product of its digits is 73156608, while the sum is 70.

The square root of 9989787148 is about 99948.9226955448. The cubic root of 9989787148 is about 2153.7010094550.

The spelling of 9989787148 in words is "nine billion, nine hundred eighty-nine million, seven hundred eighty-seven thousand, one hundred forty-eight".