98539909 has 16 divisors (see below), whose sum is σ = 112268800. Its totient is φ = 85738176.

The previous prime is 98539907. The next prime is 98539921. The reversal of 98539909 is 90993589.

It is a cyclic number.

It is not a de Polignac number, because 98539909 - 2¹ = 98539907 is a prime.

It is a super-2 number, since 2×98539909² = 19420227331456562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98539901) 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, 54187 + ... + 55975.

It is an arithmetic number, because the mean of its divisors is an integer number (7016800).

Almost surely, 2^98539909 is an apocalyptic number.

It is an amenable number.

98539909 is a deficient number, since it is larger than the sum of its proper divisors (13728891).

98539909 is a wasteful number, since it uses less digits than its factorization.

98539909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044.

The product of its (nonzero) digits is 787320, while the sum is 52.

The square root of 98539909 is about 9926.7270033985. The cubic root of 98539909 is about 461.8887512226. Note that the first 3 decimals are identical.

The spelling of 98539909 in words is "ninety-eight million, five hundred thirty-nine thousand, nine hundred nine".