989109378384 has 40 divisors (see below), whose sum is σ = 2689683399840. Its totient is φ = 312350329728.

The previous prime is 989109378379. The next prime is 989109378401. The reversal of 989109378384 is 483873901989.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542273967 + ... + 542275790.

It is an arithmetic number, because the mean of its divisors is an integer number (67242084996).

Almost surely, 2^989109378384 is an apocalyptic number.

It is an amenable number.

989109378384 is an abundant number, since it is smaller than the sum of its proper divisors (1700574021456).

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

989109378384 is a wasteful number, since it uses less digits than its factorization.

989109378384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084549787 (or 1084549781 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 69.

The spelling of 989109378384 in words is "nine hundred eighty-nine billion, one hundred nine million, three hundred seventy-eight thousand, three hundred eighty-four".