99989904 has 40 divisors (see below), whose sum is σ = 295209280. Its totient is φ = 28568448.

The previous prime is 99989891. The next prime is 99989909. The reversal of 99989904 is 40998999.

It is not an unprimeable number, because it can be changed into a prime (99989909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148459 + ... + 149130.

It is an arithmetic number, because the mean of its divisors is an integer number (7380232).

Almost surely, 2^99989904 is an apocalyptic number.

It is an amenable number.

99989904 is an abundant number, since it is smaller than the sum of its proper divisors (195219376).

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

99989904 is a wasteful number, since it uses less digits than its factorization.

99989904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297607 (or 297601 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 57.

The square root of 99989904 is about 9999.4951872582. The cubic root of 99989904 is about 464.1432623419.

The spelling of 99989904 in words is "ninety-nine million, nine hundred eighty-nine thousand, nine hundred four".