9879531 has 4 divisors (see below), whose sum is σ = 13172712. Its totient is φ = 6586352.

The previous prime is 9879521. The next prime is 9879557. The reversal of 9879531 is 1359789.

It is a happy number.

9879531 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.

It is a cyclic number.

It is not a de Polignac number, because 9879531 - 2⁷ = 9879403 is a prime.

It is a super-2 number, since 2×9879531² = 195210265559922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9879521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1646586 + ... + 1646591.

It is an arithmetic number, because the mean of its divisors is an integer number (3293178).

Almost surely, 2^9879531 is an apocalyptic number.

9879531 is a deficient number, since it is larger than the sum of its proper divisors (3293181).

9879531 is a wasteful number, since it uses less digits than its factorization.

9879531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3293180.

The product of its digits is 68040, while the sum is 42.

The square root of 9879531 is about 3143.1721238265. The cubic root of 9879531 is about 214.5748294951.

The spelling of 9879531 in words is "nine million, eight hundred seventy-nine thousand, five hundred thirty-one".