989116898587 has 16 divisors (see below), whose sum is σ = 1022854465792. Its totient is φ = 955751464800.

The previous prime is 989116898579. The next prime is 989116898611. The reversal of 989116898587 is 785898611989.

It is a cyclic number.

It is not a de Polignac number, because 989116898587 - 2³ = 989116898579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989116898087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22476868 + ... + 22520830.

It is an arithmetic number, because the mean of its divisors is an integer number (63928404112).

Almost surely, 2^989116898587 is an apocalyptic number.

989116898587 is a deficient number, since it is larger than the sum of its proper divisors (33737567205).

989116898587 is a wasteful number, since it uses less digits than its factorization.

989116898587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48178.

The product of its digits is 627056640, while the sum is 79.

The spelling of 989116898587 in words is "nine hundred eighty-nine billion, one hundred sixteen million, eight hundred ninety-eight thousand, five hundred eighty-seven".