100989984 has 24 divisors (see below), whose sum is σ = 265098960. Its totient is φ = 33663296.

The previous prime is 100989947. The next prime is 100989989. The reversal of 100989984 is 489989001.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (100989989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525894 + ... + 526085.

It is an arithmetic number, because the mean of its divisors is an integer number (11045790).

Almost surely, 2^100989984 is an apocalyptic number.

It is an amenable number.

100989984 is an abundant number, since it is smaller than the sum of its proper divisors (164108976).

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

100989984 is a wasteful number, since it uses less digits than its factorization.

100989984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051992 (or 1051984 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 48.

The square root of 100989984 is about 10049.3772941412. The cubic root of 100989984 is about 465.6855560117.

The spelling of 100989984 in words is "one hundred million, nine hundred eighty-nine thousand, nine hundred eighty-four".