9998369 has 4 divisors (see below), whose sum is σ = 10042260. Its totient is φ = 9954480.

The previous prime is 9998333. The next prime is 9998377. The reversal of 9998369 is 9638999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9638999 = 193 ⋅49943.

It can be written as a sum of positive squares in 2 ways, for example, as 9120400 + 877969 = 3020^2 + 937^2 .

It is a cyclic number.

It is not a de Polignac number, because 9998369 - 2¹² = 9994273 is a prime.

It is a super-2 number, since 2×9998369² = 199934765320322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9998369.

It is not an unprimeable number, because it can be changed into a prime (9998309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21602 + ... + 22059.

It is an arithmetic number, because the mean of its divisors is an integer number (2510565).

Almost surely, 2^9998369 is an apocalyptic number.

It is an amenable number.

9998369 is a deficient number, since it is larger than the sum of its proper divisors (43891).

9998369 is a wasteful number, since it uses less digits than its factorization.

9998369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43890.

The product of its digits is 944784, while the sum is 53.

The square root of 9998369 is about 3162.0197659091. The cubic root of 9998369 is about 215.4317554231.

The spelling of 9998369 in words is "nine million, nine hundred ninety-eight thousand, three hundred sixty-nine".