9954908861 has 4 divisors (see below), whose sum is σ = 9955417500. Its totient is φ = 9954400224.

The previous prime is 9954908833. The next prime is 9954908869. The reversal of 9954908861 is 1688094599.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1688094599 = 41 ⋅41173039.

It can be written as a sum of positive squares in 2 ways, for example, as 8423751961 + 1531156900 = 91781^2 + 39130^2 .

It is a cyclic number.

It is not a de Polignac number, because 9954908861 - 2⁶ = 9954908797 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 9954908861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9954908869) 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, 223736 + ... + 264513.

It is an arithmetic number, because the mean of its divisors is an integer number (2488854375).

Almost surely, 2^9954908861 is an apocalyptic number.

It is an amenable number.

9954908861 is a deficient number, since it is larger than the sum of its proper divisors (508639).

9954908861 is a wasteful number, since it uses less digits than its factorization.

9954908861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508638.

The product of its (nonzero) digits is 5598720, while the sum is 59.

The square root of 9954908861 is about 99774.2895790293. The cubic root of 9954908861 is about 2151.1916135336.

The spelling of 9954908861 in words is "nine billion, nine hundred fifty-four million, nine hundred eight thousand, eight hundred sixty-one".