9916990 has 16 divisors (see below), whose sum is σ = 17952480. Its totient is φ = 3944160.

The previous prime is 9916981. The next prime is 9917009. The reversal of 9916990 is 996199.

It is a congruent number.

It is an unprimeable number.

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, 930 + ... + 4549.

It is an arithmetic number, because the mean of its divisors is an integer number (1122030).

Almost surely, 2^9916990 is an apocalyptic number.

9916990 is a deficient number, since it is larger than the sum of its proper divisors (8035490).

9916990 is a wasteful number, since it uses less digits than its factorization.

9916990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5667.

The product of its (nonzero) digits is 39366, while the sum is 43.

The square root of 9916990 is about 3149.1252753741. The cubic root of 9916990 is about 214.8456797777.

The spelling of 9916990 in words is "nine million, nine hundred sixteen thousand, nine hundred ninety".