9898129 has 4 divisors (see below), whose sum is σ = 10165684. Its totient is φ = 9630576.

The previous prime is 9898123. The next prime is 9898139. The reversal of 9898129 is 9218989.

It is a happy number.

9898129 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9218989 = 13 ⋅709153.

It can be written as a sum of positive squares in 2 ways, for example, as 4631104 + 5267025 = 2152^2 + 2295^2 .

It is a cyclic number.

It is not a de Polignac number, because 9898129 - 2⁷ = 9898001 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9898123) 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, 133722 + ... + 133795.

It is an arithmetic number, because the mean of its divisors is an integer number (2541421).

Almost surely, 2^9898129 is an apocalyptic number.

It is an amenable number.

9898129 is a deficient number, since it is larger than the sum of its proper divisors (267555).

9898129 is a wasteful number, since it uses less digits than its factorization.

9898129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267554.

The product of its digits is 93312, while the sum is 46.

The square root of 9898129 is about 3146.1292090440. The cubic root of 9898129 is about 214.7093892289.

The spelling of 9898129 in words is "nine million, eight hundred ninety-eight thousand, one hundred twenty-nine".