9896989 has 2 divisors, whose sum is σ = 9896990. Its totient is φ = 9896988.

The previous prime is 9896987. The next prime is 9897001.

9896989 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6125625 + 3771364 = 2475^2 + 1942^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 9896989 - 2¹ = 9896987 is a prime.

It is a super-2 number, since 2×9896989² = 195900782532242, which contains 22 as substring.

Together with 9896987, it forms a pair of twin primes.

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

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9896981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4948494 + 4948495.

It is an arithmetic number, because the mean of its divisors is an integer number (4948495).

Almost surely, 2^9896989 is an apocalyptic number.

It is an amenable number.

9896989 is a deficient number, since it is larger than the sum of its proper divisors (1).

9896989 is an equidigital number, since it uses as much as digits as its factorization.

9896989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2519424, while the sum is 58.

The square root of 9896989 is about 3145.9480288142. The cubic root of 9896989 is about 214.7011459841.

The spelling of 9896989 in words is "nine million, eight hundred ninety-six thousand, nine hundred eighty-nine".