98871209 has 4 divisors (see below), whose sum is σ = 98891604. Its totient is φ = 98850816.

The previous prime is 98871203. The next prime is 98871211. The reversal of 98871209 is 90217889.

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 92256025 + 6615184 = 9605^2 + 2572^2 .

It is a cyclic number.

It is not a de Polignac number, because 98871209 - 2²⁰ = 97822633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 98871209.

It is not an unprimeable number, because it can be changed into a prime (98871203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1709 + ... + 14165.

It is an arithmetic number, because the mean of its divisors is an integer number (24722901).

Almost surely, 2^98871209 is an apocalyptic number.

It is an amenable number.

98871209 is a deficient number, since it is larger than the sum of its proper divisors (20395).

98871209 is a wasteful number, since it uses less digits than its factorization.

98871209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20394.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 98871209 is about 9943.4002735483. The cubic root of 98871209 is about 462.4058093068.

The spelling of 98871209 in words is "ninety-eight million, eight hundred seventy-one thousand, two hundred nine".