9998441111 has 2 divisors, whose sum is σ = 9998441112. Its totient is φ = 9998441110.

The previous prime is 9998440999. The next prime is 9998441119. The reversal of 9998441111 is 1111448999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9998441111 - 2¹⁰ = 9998440087 is a prime.

It is a Sophie Germain prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9998441119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999220555 + 4999220556.

It is an arithmetic number, because the mean of its divisors is an integer number (4999220556).

Almost surely, 2^9998441111 is an apocalyptic number.

9998441111 is a deficient number, since it is larger than the sum of its proper divisors (1).

9998441111 is an equidigital number, since it uses as much as digits as its factorization.

9998441111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 47.

The square root of 9998441111 is about 99992.2052512095. The cubic root of 9998441111 is about 2154.3227333961.

The spelling of 9998441111 in words is "nine billion, nine hundred ninety-eight million, four hundred forty-one thousand, one hundred eleven".