9896641 has 2 divisors, whose sum is σ = 9896642. Its totient is φ = 9896640.

The previous prime is 9896639. The next prime is 9896659. The reversal of 9896641 is 1466989.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5880625 + 4016016 = 2425^2 + 2004^2 .

It is a cyclic number.

It is not a de Polignac number, because 9896641 - 2¹ = 9896639 is a prime.

Together with 9896639, it forms a pair of twin primes.

9896641 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (9896611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4948320 + 4948321.

It is an arithmetic number, because the mean of its divisors is an integer number (4948321).

Almost surely, 2^9896641 is an apocalyptic number.

It is an amenable number.

9896641 is a deficient number, since it is larger than the sum of its proper divisors (1).

9896641 is an equidigital number, since it uses as much as digits as its factorization.

9896641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 43.

The square root of 9896641 is about 3145.8927190863. The cubic root of 9896641 is about 214.6986294990.

The spelling of 9896641 in words is "nine million, eight hundred ninety-six thousand, six hundred forty-one".