9979220005 has 8 divisors (see below), whose sum is σ = 12018296952. Its totient is φ = 7954554048.

The previous prime is 9979220003. The next prime is 9979220023. The reversal of 9979220005 is 5000229799.

It can be written as a sum of positive squares in 4 ways, for example, as 2338012609 + 7641207396 = 48353^2 + 87414^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9979220005 - 2¹ = 9979220003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9979220003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3601222 + ... + 3603991.

It is an arithmetic number, because the mean of its divisors is an integer number (1502287119).

Almost surely, 2^9979220005 is an apocalyptic number.

It is an amenable number.

9979220005 is a deficient number, since it is larger than the sum of its proper divisors (2039076947).

9979220005 is a wasteful number, since it uses less digits than its factorization.

9979220005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7205495.

The product of its (nonzero) digits is 102060, while the sum is 43.

The square root of 9979220005 is about 99896.0459928220. The cubic root of 9979220005 is about 2152.9413504312.

The spelling of 9979220005 in words is "nine billion, nine hundred seventy-nine million, two hundred twenty thousand, five".