9998291 has 8 divisors (see below), whose sum is σ = 10334304. Its totient is φ = 9667840.

The previous prime is 9998281. The next prime is 9998309. The reversal of 9998291 is 1928999.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9998291 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9998201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2435 + ... + 5091.

It is an arithmetic number, because the mean of its divisors is an integer number (1291788).

Almost surely, 2^9998291 is an apocalyptic number.

9998291 is a deficient number, since it is larger than the sum of its proper divisors (336013).

9998291 is a wasteful number, since it uses less digits than its factorization.

9998291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2781.

The product of its digits is 104976, while the sum is 47.

The square root of 9998291 is about 3162.0074319963. The cubic root of 9998291 is about 215.4311952077.

Subtracting from 9998291 its sum of digits (47), we obtain a square (9998244 = 3162²).

The spelling of 9998291 in words is "nine million, nine hundred ninety-eight thousand, two hundred ninety-one".