98735209 has 4 divisors (see below), whose sum is σ = 98763604. Its totient is φ = 98706816.

The previous prime is 98735183. The next prime is 98735281. The reversal of 98735209 is 90253789.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 84272400 + 14462809 = 9180^2 + 3803^2 .

It is a 3-Lehmer number, since φ(98735209) divides (98735209-1)³.

It is a cyclic number.

It is not a de Polignac number, because 98735209 - 2⁵ = 98735177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98735309) 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 3 ways as a sum of consecutive naturals, for example, 8112 + ... + 16225.

It is an arithmetic number, because the mean of its divisors is an integer number (24690901).

It is a Poulet number, since it divides 2^98735208-1.

Almost surely, 2^98735209 is an apocalyptic number.

It is an amenable number.

98735209 is a deficient number, since it is larger than the sum of its proper divisors (28395).

98735209 is a wasteful number, since it uses less digits than its factorization.

98735209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28394.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 98735209 is about 9936.5592133293. The cubic root of 98735209 is about 462.1936948227.

The spelling of 98735209 in words is "ninety-eight million, seven hundred thirty-five thousand, two hundred nine".