9896987 has 2 divisors, whose sum is σ = 9896988. Its totient is φ = 9896986.

The previous prime is 9896981. The next prime is 9896989. The reversal of 9896987 is 7896989.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9896987 - 2¹² = 9892891 is a prime.

Together with 9896989, it forms a pair of twin primes.

It is a Chen prime.

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

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, 4948493 + 4948494.

It is an arithmetic number, because the mean of its divisors is an integer number (4948494).

Almost surely, 2^9896987 is an apocalyptic number.

9896987 is a deficient number, since it is larger than the sum of its proper divisors (1).

9896987 is an equidigital number, since it uses as much as digits as its factorization.

9896987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 56.

The square root of 9896987 is about 3145.9477109450. The cubic root of 9896987 is about 214.7011315217.

The spelling of 9896987 in words is "nine million, eight hundred ninety-six thousand, nine hundred eighty-seven".