98431805 has 4 divisors (see below), whose sum is σ = 118118172. Its totient is φ = 78745440.

The previous prime is 98431793. The next prime is 98431831. The reversal of 98431805 is 50813489.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50813489 = 3527 ⋅14407.

It can be written as a sum of positive squares in 2 ways, for example, as 12517444 + 85914361 = 3538^2 + 9269^2 .

It is a de Polignac number, because none of the positive numbers 2^k-98431805 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9843176 + ... + 9843185.

It is an arithmetic number, because the mean of its divisors is an integer number (29529543).

Almost surely, 2^98431805 is an apocalyptic number.

It is an amenable number.

98431805 is a deficient number, since it is larger than the sum of its proper divisors (19686367).

98431805 is a wasteful number, since it uses less digits than its factorization.

98431805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19686366.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 98431805 is about 9921.2804113179. The cubic root of 98431805 is about 461.7197831613.

The spelling of 98431805 in words is "ninety-eight million, four hundred thirty-one thousand, eight hundred five".