9879663 has 4 divisors (see below), whose sum is σ = 13172888. Its totient is φ = 6586440.

The previous prime is 9879659. The next prime is 9879689. The reversal of 9879663 is 3669789.

It is a happy number.

9879663 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3669789 = 3 ⋅1223263.

It is not a de Polignac number, because 9879663 - 2² = 9879659 is a prime.

It is a Duffinian number.

9879663 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9879643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1646608 + ... + 1646613.

It is an arithmetic number, because the mean of its divisors is an integer number (3293222).

Almost surely, 2^9879663 is an apocalyptic number.

9879663 is a deficient number, since it is larger than the sum of its proper divisors (3293225).

9879663 is a wasteful number, since it uses less digits than its factorization.

9879663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3293224.

The product of its digits is 489888, while the sum is 48.

The square root of 9879663 is about 3143.1931216519. The cubic root of 9879663 is about 214.5757851326.

The spelling of 9879663 in words is "nine million, eight hundred seventy-nine thousand, six hundred sixty-three".