9908997 has 16 divisors (see below), whose sum is σ = 15150720. Its totient is φ = 5643072.

The previous prime is 9908957. The next prime is 9909001. The reversal of 9908997 is 7998099.

It is not a de Polignac number, because 9908997 - 2¹² = 9904901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9908917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7563 + ... + 8775.

It is an arithmetic number, because the mean of its divisors is an integer number (946920).

Almost surely, 2^9908997 is an apocalyptic number.

It is an amenable number.

9908997 is a deficient number, since it is larger than the sum of its proper divisors (5241723).

9908997 is a wasteful number, since it uses less digits than its factorization.

9908997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1612.

The product of its (nonzero) digits is 367416, while the sum is 51.

The square root of 9908997 is about 3147.8559369831. The cubic root of 9908997 is about 214.7879430689.

The spelling of 9908997 in words is "nine million, nine hundred eight thousand, nine hundred ninety-seven".