9879631 has 4 divisors (see below), whose sum is σ = 9972072. Its totient is φ = 9787192.

The previous prime is 9879599. The next prime is 9879641. The reversal of 9879631 is 1369789.

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 9879631 - 2⁵ = 9879599 is a prime.

It is a super-2 number, since 2×9879631² = 195214217392322, which contains 22 as substring.

It is a Duffinian number.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46060 + ... + 46273.

It is an arithmetic number, because the mean of its divisors is an integer number (2493018).

Almost surely, 2^9879631 is an apocalyptic number.

9879631 is a deficient number, since it is larger than the sum of its proper divisors (92441).

9879631 is a wasteful number, since it uses less digits than its factorization.

9879631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92440.

The product of its digits is 81648, while the sum is 43.

The square root of 9879631 is about 3143.1880312829. The cubic root of 9879631 is about 214.5755534637.

The spelling of 9879631 in words is "nine million, eight hundred seventy-nine thousand, six hundred thirty-one".