9898961 has 4 divisors (see below), whose sum is σ = 10066800. Its totient is φ = 9731124.

The previous prime is 9898921. The next prime is 9898979. The reversal of 9898961 is 1698989.

9898961 is digitally balanced in base 2, 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1698989 = 353 ⋅4813.

It is a cyclic number.

It is not a de Polignac number, because 9898961 - 2¹⁴ = 9882577 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 (9898921) 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, 83831 + ... + 83948.

It is an arithmetic number, because the mean of its divisors is an integer number (2516700).

Almost surely, 2^9898961 is an apocalyptic number.

It is an amenable number.

9898961 is a deficient number, since it is larger than the sum of its proper divisors (167839).

9898961 is a wasteful number, since it uses less digits than its factorization.

9898961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167838.

The product of its digits is 279936, while the sum is 50.

The square root of 9898961 is about 3146.2614322399. The cubic root of 9898961 is about 214.7154049519.

The spelling of 9898961 in words is "nine million, eight hundred ninety-eight thousand, nine hundred sixty-one".