99938980 has 12 divisors (see below), whose sum is σ = 209871900. Its totient is φ = 39975584.

The previous prime is 99938977. The next prime is 99938981. The reversal of 99938980 is 8983999.

It can be written as a sum of positive squares in 2 ways, for example, as 45887076 + 54051904 = 6774^2 + 7352^2 .

It is not an unprimeable number, because it can be changed into a prime (99938981) 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, 2498455 + ... + 2498494.

It is an arithmetic number, because the mean of its divisors is an integer number (17489325).

Almost surely, 2^99938980 is an apocalyptic number.

It is an amenable number.

99938980 is an abundant number, since it is smaller than the sum of its proper divisors (109932920).

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

99938980 is a wasteful number, since it uses less digits than its factorization.

99938980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4996958 (or 4996956 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 55.

The square root of 99938980 is about 9996.9485344279. The cubic root of 99938980 is about 464.0644542349.

The spelling of 99938980 in words is "ninety-nine million, nine hundred thirty-eight thousand, nine hundred eighty".