9993998353 has 2 divisors, whose sum is σ = 9993998354. Its totient is φ = 9993998352.

The previous prime is 9993998327. The next prime is 9993998359. The reversal of 9993998353 is 3538993999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5927768064 + 4066230289 = 76992^2 + 63767^2 .

It is a cyclic number.

It is not a de Polignac number, because 9993998353 - 2²⁵ = 9960443921 is a prime.

It is not a weakly prime, because it can be changed into another prime (9993998359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4996999176 + 4996999177.

It is an arithmetic number, because the mean of its divisors is an integer number (4996999177).

Almost surely, 2^9993998353 is an apocalyptic number.

It is an amenable number.

9993998353 is a deficient number, since it is larger than the sum of its proper divisors (1).

9993998353 is an equidigital number, since it uses as much as digits as its factorization.

9993998353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63772920, while the sum is 67.

The square root of 9993998353 is about 99969.9872611775. The cubic root of 9993998353 is about 2154.0035985619.

The spelling of 9993998353 in words is "nine billion, nine hundred ninety-three million, nine hundred ninety-eight thousand, three hundred fifty-three".