9979663 has 8 divisors (see below), whose sum is σ = 10603008. Its totient is φ = 9360384.

The previous prime is 9979643. The next prime is 9979681. The reversal of 9979663 is 3669799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9979663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9979643) 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 7 ways as a sum of consecutive naturals, for example, 5170 + ... + 6832.

It is an arithmetic number, because the mean of its divisors is an integer number (1325376).

Almost surely, 2^9979663 is an apocalyptic number.

9979663 is a deficient number, since it is larger than the sum of its proper divisors (623345).

9979663 is a wasteful number, since it uses less digits than its factorization.

9979663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033.

The product of its digits is 551124, while the sum is 49.

The square root of 9979663 is about 3159.0604615930. The cubic root of 9979663 is about 215.2973207568.

The spelling of 9979663 in words is "nine million, nine hundred seventy-nine thousand, six hundred sixty-three".