99840941 has 2 divisors, whose sum is σ = 99840942. Its totient is φ = 99840940.

The previous prime is 99840919. The next prime is 99840967. The reversal of 99840941 is 14904899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91604041 + 8236900 = 9571^2 + 2870^2 .

It is an emirp because it is prime and its reverse (14904899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99840941 - 2¹⁸ = 99578797 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 99840892 and 99840901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99840901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49920470 + 49920471.

It is an arithmetic number, because the mean of its divisors is an integer number (49920471).

Almost surely, 2^99840941 is an apocalyptic number.

It is an amenable number.

99840941 is a deficient number, since it is larger than the sum of its proper divisors (1).

99840941 is an equidigital number, since it uses as much as digits as its factorization.

99840941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 99840941 is about 9992.0438850117. The cubic root of 99840941 is about 463.9126572741.

The spelling of 99840941 in words is "ninety-nine million, eight hundred forty thousand, nine hundred forty-one".