9897916 has 24 divisors (see below), whose sum is σ = 20039040. Its totient is φ = 4189872.

The previous prime is 9897913. The next prime is 9897919. The reversal of 9897916 is 6197989.

It is an interprime number because it is at equal distance from previous prime (9897913) and next prime (9897919).

It is a super-2 number, since 2×9897916² = 195937482286112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9897916.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9897913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195 + ... + 4453.

It is an arithmetic number, because the mean of its divisors is an integer number (834960).

Almost surely, 2^9897916 is an apocalyptic number.

It is an amenable number.

9897916 is an abundant number, since it is smaller than the sum of its proper divisors (10141124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9897916 is a wasteful number, since it uses less digits than its factorization.

9897916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4353 (or 4351 counting only the distinct ones).

The product of its digits is 244944, while the sum is 49.

The square root of 9897916 is about 3146.0953577411. The cubic root of 9897916 is about 214.7078490917.

The spelling of 9897916 in words is "nine million, eight hundred ninety-seven thousand, nine hundred sixteen".