989886408968 has 36 divisors (see below), whose sum is σ = 1892002398615. Its totient is φ = 485531487168.

The previous prime is 989886408941. The next prime is 989886409003. The reversal of 989886408968 is 869804688989.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 116637276484 + 873249132484 = 341522^2 + 934478^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=703522.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 149143346 + ... + 149149982.

Almost surely, 2^989886408968 is an apocalyptic number.

It is an amenable number.

989886408968 is a deficient number, since it is larger than the sum of its proper divisors (902115989647).

989886408968 is an frugal number, since it uses more digits than its factorization.

989886408968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13386 (or 6692 counting only the distinct ones).

The product of its (nonzero) digits is 3439853568, while the sum is 83.

The spelling of 989886408968 in words is "nine hundred eighty-nine billion, eight hundred eighty-six million, four hundred eight thousand, nine hundred sixty-eight".