99839898 has 32 divisors (see below), whose sum is σ = 222275520. Its totient is φ = 33218640.

The previous prime is 99839897. The next prime is 99839903. The reversal of 99839898 is 89893899.

It is not an unprimeable number, because it can be changed into a prime (99839893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35193 + ... + 37923.

It is an arithmetic number, because the mean of its divisors is an integer number (6946110).

Almost surely, 2^99839898 is an apocalyptic number.

99839898 is an abundant number, since it is smaller than the sum of its proper divisors (122435622).

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

99839898 is a wasteful number, since it uses less digits than its factorization.

99839898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3419 (or 3413 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 63.

The square root of 99839898 is about 9991.9916933512. The cubic root of 99839898 is about 463.9110418293.

It can be divided in two parts, 9983 and 9898, that added together give a square (19881 = 141²).

The spelling of 99839898 in words is "ninety-nine million, eight hundred thirty-nine thousand, eight hundred ninety-eight".