9879647 has 4 divisors (see below), whose sum is σ = 10120656. Its totient is φ = 9638640.

The previous prime is 9879643. The next prime is 9879659. The reversal of 9879647 is 7469789.

It is a happy number.

9879647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9879647 - 2² = 9879643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9879595 and 9879604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9879641) 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, 120443 + ... + 120524.

It is an arithmetic number, because the mean of its divisors is an integer number (2530164).

Almost surely, 2^9879647 is an apocalyptic number.

9879647 is a deficient number, since it is larger than the sum of its proper divisors (241009).

9879647 is a wasteful number, since it uses less digits than its factorization.

9879647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241008.

The product of its digits is 762048, while the sum is 50.

The square root of 9879647 is about 3143.1905764684. The cubic root of 9879647 is about 214.5756692982.

The spelling of 9879647 in words is "nine million, eight hundred seventy-nine thousand, six hundred forty-seven".