999999353 has 2 divisors, whose sum is σ = 999999354. Its totient is φ = 999999352.

The previous prime is 999999337. The next prime is 999999391. The reversal of 999999353 is 353999999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 527023849 + 472975504 = 22957^2 + 21748^2 .

It is an emirp because it is prime and its reverse (353999999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999999353 - 2⁴ = 999999337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 999999353.

It is not a weakly prime, because it can be changed into another prime (999999323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499999676 + 499999677.

It is an arithmetic number, because the mean of its divisors is an integer number (499999677).

Almost surely, 2^999999353 is an apocalyptic number.

It is an amenable number.

999999353 is a deficient number, since it is larger than the sum of its proper divisors (1).

999999353 is an equidigital number, since it uses as much as digits as its factorization.

999999353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23914845, while the sum is 65.

The square root of 999999353 is about 31622.7663717139. The cubic root of 999999353 is about 999.9997843333. Note that the first 3 decimals are identical.

The spelling of 999999353 in words is "nine hundred ninety-nine million, nine hundred ninety-nine thousand, three hundred fifty-three".