9979650582 has 128 divisors (see below), whose sum is σ = 23083522560. Its totient is φ = 2849034240.

The previous prime is 9979650581. The next prime is 9979650647. The reversal of 9979650582 is 2850569799.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9979650581) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10741894 + ... + 10742822.

It is an arithmetic number, because the mean of its divisors is an integer number (180340020).

Almost surely, 2^9979650582 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9979650582, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11541761280).

9979650582 is an abundant number, since it is smaller than the sum of its proper divisors (13103871978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9979650582 is a wasteful number, since it uses less digits than its factorization.

9979650582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118.

The product of its (nonzero) digits is 12247200, while the sum is 60.

The square root of 9979650582 is about 99898.2010949146. The cubic root of 9979650582 is about 2152.9723145645.

The spelling of 9979650582 in words is "nine billion, nine hundred seventy-nine million, six hundred fifty thousand, five hundred eighty-two".