98099809 has 16 divisors (see below), whose sum is σ = 106245648. Its totient is φ = 90243072.

The previous prime is 98099803. The next prime is 98099821. The reversal of 98099809 is 90899089.

It can be written as a sum of positive squares in 8 ways, for example, as 29160000 + 68939809 = 5400^2 + 8303^2 .

It is not a de Polignac number, because 98099809 - 2³ = 98099801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (98099801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169729 + ... + 170305.

It is an arithmetic number, because the mean of its divisors is an integer number (6640353).

Almost surely, 2^98099809 is an apocalyptic number.

It is an amenable number.

98099809 is a deficient number, since it is larger than the sum of its proper divisors (8145839).

98099809 is a wasteful number, since it uses less digits than its factorization.

98099809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804.

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

The square root of 98099809 is about 9904.5347694882. The cubic root of 98099809 is about 461.2000941396.

The spelling of 98099809 in words is "ninety-eight million, ninety-nine thousand, eight hundred nine".