99840353 has 2 divisors, whose sum is σ = 99840354. Its totient is φ = 99840352.

The previous prime is 99840343. The next prime is 99840409. The reversal of 99840353 is 35304899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99840064 + 289 = 9992^2 + 17^2 .

It is a cyclic number.

It is not a de Polignac number, because 99840353 - 2²² = 95646049 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 99840353.

It is not a weakly prime, because it can be changed into another prime (99840313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49920176 + 49920177.

It is an arithmetic number, because the mean of its divisors is an integer number (49920177).

Almost surely, 2^99840353 is an apocalyptic number.

It is an amenable number.

99840353 is a deficient number, since it is larger than the sum of its proper divisors (1).

99840353 is an equidigital number, since it uses as much as digits as its factorization.

99840353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 99840353 is about 9992.0144615588. The cubic root of 99840353 is about 463.9117465549.

The spelling of 99840353 in words is "ninety-nine million, eight hundred forty thousand, three hundred fifty-three".