9999748441 has 2 divisors, whose sum is σ = 9999748442. Its totient is φ = 9999748440.

The previous prime is 9999748403. The next prime is 9999748453. The reversal of 9999748441 is 1448479999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5907459600 + 4092288841 = 76860^2 + 63971^2 .

It is an emirp because it is prime and its reverse (1448479999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9999748441 - 2⁹ = 9999747929 is a prime.

It is not a weakly prime, because it can be changed into another prime (9999748481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999874220 + 4999874221.

It is an arithmetic number, because the mean of its divisors is an integer number (4999874221).

Almost surely, 2^9999748441 is an apocalyptic number.

It is an amenable number.

9999748441 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999748441 is an equidigital number, since it uses as much as digits as its factorization.

9999748441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23514624, while the sum is 64.

The square root of 9999748441 is about 99998.7421970897. The cubic root of 9999748441 is about 2154.4166242992.

The spelling of 9999748441 in words is "nine billion, nine hundred ninety-nine million, seven hundred forty-eight thousand, four hundred forty-one".