9925979011 has 16 divisors (see below), whose sum is σ = 10992137184. Its totient is φ = 8903672064.

The previous prime is 9925978967. The next prime is 9925979017. The reversal of 9925979011 is 1109795299.

It is a happy number.

9925979011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9925979011 - 2⁷ = 9925978883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9925979011.

It is not an unprimeable number, because it can be changed into a prime (9925979017) 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 15 ways as a sum of consecutive naturals, for example, 385311 + ... + 410263.

It is an arithmetic number, because the mean of its divisors is an integer number (687008574).

Almost surely, 2^9925979011 is an apocalyptic number.

9925979011 is a deficient number, since it is larger than the sum of its proper divisors (1066158173).

9925979011 is a wasteful number, since it uses less digits than its factorization.

9925979011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25830.

The product of its (nonzero) digits is 459270, while the sum is 52.

The square root of 9925979011 is about 99629.2076200549. The cubic root of 9925979011 is about 2149.1057403027.

The spelling of 9925979011 in words is "nine billion, nine hundred twenty-five million, nine hundred seventy-nine thousand, eleven".