99840343 has 2 divisors, whose sum is σ = 99840344. Its totient is φ = 99840342.

The previous prime is 99840341. The next prime is 99840353. The reversal of 99840343 is 34304899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99840343 - 2¹ = 99840341 is a prime.

Together with 99840341, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 99840296 and 99840305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99840341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49920171 + 49920172.

It is an arithmetic number, because the mean of its divisors is an integer number (49920172).

Almost surely, 2^99840343 is an apocalyptic number.

99840343 is a deficient number, since it is larger than the sum of its proper divisors (1).

99840343 is an equidigital number, since it uses as much as digits as its factorization.

99840343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 99840343 is about 9992.0139611592. The cubic root of 99840343 is about 463.9117310665.

The spelling of 99840343 in words is "ninety-nine million, eight hundred forty thousand, three hundred forty-three".