9886951121 has 4 divisors (see below), whose sum is σ = 10227880500. Its totient is φ = 9546021744.

The previous prime is 9886951099. The next prime is 9886951141. The reversal of 9886951121 is 1211596889.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1820216896 + 8066734225 = 42664^2 + 89815^2 .

It is a cyclic number.

It is not a de Polignac number, because 9886951121 - 2¹⁰ = 9886950097 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 9886951121.

It is not an unprimeable number, because it can be changed into a prime (9886951141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170464646 + ... + 170464703.

It is an arithmetic number, because the mean of its divisors is an integer number (2556970125).

Almost surely, 2^9886951121 is an apocalyptic number.

It is an amenable number.

9886951121 is a deficient number, since it is larger than the sum of its proper divisors (340929379).

9886951121 is a wasteful number, since it uses less digits than its factorization.

9886951121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340929378.

The product of its digits is 311040, while the sum is 50.

The square root of 9886951121 is about 99433.1490047459. The cubic root of 9886951121 is about 2146.2853557891.

The spelling of 9886951121 in words is "nine billion, eight hundred eighty-six million, nine hundred fifty-one thousand, one hundred twenty-one".