99839385 has 60 divisors (see below), whose sum is σ = 190341228. Its totient is φ = 50056704.

The previous prime is 99839359. The next prime is 99839401. The reversal of 99839385 is 58393899.

It can be written as a sum of positive squares in 6 ways, for example, as 219024 + 99620361 = 468^2 + 9981^2 .

It is not a de Polignac number, because 99839385 - 2⁶ = 99839321 is a prime.

It is an unprimeable number.

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 59 ways as a sum of consecutive naturals, for example, 116619 + ... + 117471.

Almost surely, 2^99839385 is an apocalyptic number.

It is an amenable number.

99839385 is a deficient number, since it is larger than the sum of its proper divisors (90501843).

99839385 is a wasteful number, since it uses less digits than its factorization.

99839385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904 (or 878 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 99839385 is about 9991.9660227605. The cubic root of 99839385 is about 463.9102472679.

The spelling of 99839385 in words is "ninety-nine million, eight hundred thirty-nine thousand, three hundred eighty-five".