9889253121 has 16 divisors (see below), whose sum is σ = 15009776640. Its totient is φ = 5732899920.

The previous prime is 9889253117. The next prime is 9889253147. The reversal of 9889253121 is 1213529889.

It is not a de Polignac number, because 9889253121 - 2² = 9889253117 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9889255121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6513901 + ... + 6515418.

It is an arithmetic number, because the mean of its divisors is an integer number (938111040).

Almost surely, 2^9889253121 is an apocalyptic number.

It is an amenable number.

9889253121 is a deficient number, since it is larger than the sum of its proper divisors (5120523519).

9889253121 is a wasteful number, since it uses less digits than its factorization.

9889253121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13029356.

The product of its digits is 311040, while the sum is 48.

The square root of 9889253121 is about 99444.7239475278. The cubic root of 9889253121 is about 2146.4519176012.

The spelling of 9889253121 in words is "nine billion, eight hundred eighty-nine million, two hundred fifty-three thousand, one hundred twenty-one".