99900889 has 8 divisors (see below), whose sum is σ = 109100160. Its totient is φ = 90721200.

The previous prime is 99900883. The next prime is 99900893. The reversal of 99900889 is 98800999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99900889 - 2¹⁹ = 99376601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99900883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7059 + ... + 15799.

It is an arithmetic number, because the mean of its divisors is an integer number (13637520).

Almost surely, 2^99900889 is an apocalyptic number.

It is an amenable number.

99900889 is a deficient number, since it is larger than the sum of its proper divisors (9199271).

99900889 is a wasteful number, since it uses less digits than its factorization.

99900889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9791.

The product of its (nonzero) digits is 419904, while the sum is 52.

The square root of 99900889 is about 9995.0432215174. The cubic root of 99900889 is about 464.0054885028.

The spelling of 99900889 in words is "ninety-nine million, nine hundred thousand, eight hundred eighty-nine".