999447353 has 2 divisors, whose sum is σ = 999447354. Its totient is φ = 999447352.

The previous prime is 999447331. The next prime is 999447401. The reversal of 999447353 is 353744999.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 499835449 + 499611904 = 22357^2 + 22352^2 .

It is a cyclic number.

It is not a de Polignac number, because 999447353 - 2²⁰ = 998398777 is a prime.

It is a super-2 number, since 2×999447353² = 1997790022837413218, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 999447295 and 999447304.

It is not a weakly prime, because it can be changed into another prime (999447853) 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, 499723676 + 499723677.

It is an arithmetic number, because the mean of its divisors is an integer number (499723677).

Almost surely, 2^999447353 is an apocalyptic number.

It is an amenable number.

999447353 is a deficient number, since it is larger than the sum of its proper divisors (1).

999447353 is an equidigital number, since it uses as much as digits as its factorization.

999447353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3674160, while the sum is 53.

The square root of 999447353 is about 31614.0372777663. The cubic root of 999447353 is about 999.8157503875.

The spelling of 999447353 in words is "nine hundred ninety-nine million, four hundred forty-seven thousand, three hundred fifty-three".