9847879 has 4 divisors (see below), whose sum is σ = 10427184. Its totient is φ = 9268576.

The previous prime is 9847847. The next prime is 9847889. The reversal of 9847879 is 9787489.

It is a happy number.

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 9847879 - 2⁵ = 9847847 is a prime.

It is a Duffinian number.

9847879 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9847819) 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, 289627 + ... + 289660.

It is an arithmetic number, because the mean of its divisors is an integer number (2606796).

Almost surely, 2^9847879 is an apocalyptic number.

9847879 is a deficient number, since it is larger than the sum of its proper divisors (579305).

9847879 is a wasteful number, since it uses less digits than its factorization.

9847879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579304.

The product of its digits is 1016064, while the sum is 52.

The square root of 9847879 is about 3138.1330437061. The cubic root of 9847879 is about 214.3454330275.

The spelling of 9847879 in words is "nine million, eight hundred forty-seven thousand, eight hundred seventy-nine".