9615984121 has 4 divisors (see below), whose sum is σ = 9621925200. Its totient is φ = 9610043044.

The previous prime is 9615984101. The next prime is 9615984127. The reversal of 9615984121 is 1214895169.

It is a happy number.

9615984121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9615984121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9615984127) 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 3 ways as a sum of consecutive naturals, for example, 2968111 + ... + 2971348.

It is an arithmetic number, because the mean of its divisors is an integer number (2405481300).

Almost surely, 2^9615984121 is an apocalyptic number.

It is an amenable number.

9615984121 is a deficient number, since it is larger than the sum of its proper divisors (5941079).

9615984121 is a wasteful number, since it uses less digits than its factorization.

9615984121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5941078.

The product of its digits is 155520, while the sum is 46.

The square root of 9615984121 is about 98061.1244122767. The cubic root of 9615984121 is about 2126.4960442505.

The spelling of 9615984121 in words is "nine billion, six hundred fifteen million, nine hundred eighty-four thousand, one hundred twenty-one".