9998245 has 8 divisors (see below), whose sum is σ = 12015000. Its totient is φ = 7987200.

The previous prime is 9998239. The next prime is 9998249. The reversal of 9998245 is 5428999.

9998245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 3162²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 3602404 + 6395841 = 1898^2 + 2529^2 .

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

It is not a de Polignac number, because 9998245 - 2⁷ = 9998117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9998195 and 9998204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5445 + ... + 7045.

It is an arithmetic number, because the mean of its divisors is an integer number (1501875).

Almost surely, 2^9998245 is an apocalyptic number.

It is an amenable number.

9998245 is a deficient number, since it is larger than the sum of its proper divisors (2016755).

9998245 is a wasteful number, since it uses less digits than its factorization.

9998245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855.

The product of its digits is 233280, while the sum is 46.

The square root of 9998245 is about 3162.0001581278. Note that the first 3 decimals coincide. The cubic root of 9998245 is about 215.4308648229.

It can be divided in two parts, 99 and 98245, that multiplied together give a triangular number (9726255 = T₄₄₁₀).

The spelling of 9998245 in words is "nine million, nine hundred ninety-eight thousand, two hundred forty-five".