99385890 has 16 divisors (see below), whose sum is σ = 238526208. Its totient is φ = 26502896.

The previous prime is 99385889. The next prime is 99385933. The reversal of 99385890 is 9858399.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1656402 + ... + 1656461.

It is an arithmetic number, because the mean of its divisors is an integer number (14907888).

Almost surely, 2^99385890 is an apocalyptic number.

99385890 is an abundant number, since it is smaller than the sum of its proper divisors (139140318).

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

99385890 is a wasteful number, since it uses less digits than its factorization.

99385890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3312873.

The product of its (nonzero) digits is 699840, while the sum is 51.

The square root of 99385890 is about 9969.2472133055. The cubic root of 99385890 is about 463.2067830060.

The spelling of 99385890 in words is "ninety-nine million, three hundred eighty-five thousand, eight hundred ninety".