9898139 has 2 divisors, whose sum is σ = 9898140. Its totient is φ = 9898138.

The previous prime is 9898123. The next prime is 9898151. The reversal of 9898139 is 9318989.

It is a strong prime.

It is an emirp because it is prime and its reverse (9318989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9898139 - 2⁴ = 9898123 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 9898093 and 9898102.

It is not a weakly prime, because it can be changed into another prime (9898159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4949069 + 4949070.

It is an arithmetic number, because the mean of its divisors is an integer number (4949070).

Almost surely, 2^9898139 is an apocalyptic number.

9898139 is a deficient number, since it is larger than the sum of its proper divisors (1).

9898139 is an equidigital number, since it uses as much as digits as its factorization.

9898139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 47.

The square root of 9898139 is about 3146.1307982981. The cubic root of 9898139 is about 214.7094615352.

The spelling of 9898139 in words is "nine million, eight hundred ninety-eight thousand, one hundred thirty-nine".