9879493 has 4 divisors (see below), whose sum is σ = 10639468. Its totient is φ = 9119520.

The previous prime is 9879479. The next prime is 9879521. The reversal of 9879493 is 3949789.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3949789 = 683 ⋅5783.

It can be written as a sum of positive squares in 2 ways, for example, as 5008644 + 4870849 = 2238^2 + 2207^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9879493 is a prime.

It is a Duffinian number.

9879493 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9879403) 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, 379968 + ... + 379993.

It is an arithmetic number, because the mean of its divisors is an integer number (2659867).

Almost surely, 2^9879493 is an apocalyptic number.

It is an amenable number.

9879493 is a deficient number, since it is larger than the sum of its proper divisors (759975).

9879493 is a wasteful number, since it uses less digits than its factorization.

9879493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759974.

The product of its digits is 489888, while the sum is 49.

The square root of 9879493 is about 3143.1660789720. The cubic root of 9879493 is about 214.5745543858.

The spelling of 9879493 in words is "nine million, eight hundred seventy-nine thousand, four hundred ninety-three".