9859979 has 4 divisors (see below), whose sum is σ = 10021680. Its totient is φ = 9698280.

The previous prime is 9859973. The next prime is 9859981. The reversal of 9859979 is 9799589.

9859979 is digitally balanced in base 3, 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, and also an emirpimes, since its reverse is a distinct semiprime: 9799589 = 61 ⋅160649.

It is a cyclic number.

It is not a de Polignac number, because 9859979 - 2⁴ = 9859963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9859973) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 80759 + ... + 80880.

It is an arithmetic number, because the mean of its divisors is an integer number (2505420).

Almost surely, 2^9859979 is an apocalyptic number.

9859979 is a deficient number, since it is larger than the sum of its proper divisors (161701).

9859979 is a wasteful number, since it uses less digits than its factorization.

9859979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161700.

The product of its digits is 1837080, while the sum is 56.

The square root of 9859979 is about 3140.0603497385. The cubic root of 9859979 is about 214.4331851966.

The spelling of 9859979 in words is "nine million, eight hundred fifty-nine thousand, nine hundred seventy-nine".