9879720195 has 16 divisors (see below), whose sum is σ = 16105809312. Its totient is φ = 5169765120.

The previous prime is 9879720163. The next prime is 9879720199. The reversal of 9879720195 is 5910279789.

It is not a de Polignac number, because 9879720195 - 2⁵ = 9879720163 is a prime.

It is a super-2 number, since 2×9879720195² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9879720199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6212866 + ... + 6214455.

It is an arithmetic number, because the mean of its divisors is an integer number (1006613082).

Almost surely, 2^9879720195 is an apocalyptic number.

9879720195 is a deficient number, since it is larger than the sum of its proper divisors (6226089117).

9879720195 is a wasteful number, since it uses less digits than its factorization.

9879720195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12427382.

The product of its (nonzero) digits is 2857680, while the sum is 57.

The square root of 9879720195 is about 99396.7816128872. The cubic root of 9879720195 is about 2145.7619920338.

The spelling of 9879720195 in words is "nine billion, eight hundred seventy-nine million, seven hundred twenty thousand, one hundred ninety-five".