999909353 has 8 divisors (see below), whose sum is σ = 1025004456. Its totient is φ = 974848000.

The previous prime is 999909343. The next prime is 999909359. The reversal of 999909353 is 353909999.

It can be written as a sum of positive squares in 4 ways, for example, as 80425024 + 919484329 = 8968^2 + 30323^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 999909353 - 2²⁰ = 998860777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (999909359) 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 in 7 ways as a sum of consecutive naturals, for example, 58025 + ... + 73257.

It is an arithmetic number, because the mean of its divisors is an integer number (128125557).

Almost surely, 2^999909353 is an apocalyptic number.

It is an amenable number.

999909353 is a deficient number, since it is larger than the sum of its proper divisors (25095103).

999909353 is a wasteful number, since it uses less digits than its factorization.

999909353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16875.

The product of its (nonzero) digits is 2657205, while the sum is 56.

The square root of 999909353 is about 31621.3433142870. The cubic root of 999909353 is about 999.9697834203.

The spelling of 999909353 in words is "nine hundred ninety-nine million, nine hundred nine thousand, three hundred fifty-three".