99984980 has 24 divisors (see below), whose sum is σ = 214437888. Its totient is φ = 39142688.

The previous prime is 99984967. The next prime is 99984991. The reversal of 99984980 is 8948999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52244 + ... + 54123.

It is an arithmetic number, because the mean of its divisors is an integer number (8934912).

Almost surely, 2^99984980 is an apocalyptic number.

It is an amenable number.

99984980 is an abundant number, since it is smaller than the sum of its proper divisors (114452908).

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

99984980 is a wasteful number, since it uses less digits than its factorization.

99984980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106423 (or 106421 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 56.

The square root of 99984980 is about 9999.2489717978. The cubic root of 99984980 is about 464.1356433096.

The spelling of 99984980 in words is "ninety-nine million, nine hundred eighty-four thousand, nine hundred eighty".