9998659 has 8 divisors (see below), whose sum is σ = 10967040. Its totient is φ = 9040200.

The previous prime is 9998641. The next prime is 9998689. The reversal of 9998659 is 9568999.

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 9998659 - 2⁹ = 9998147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9998689) 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, 279 + ... + 4480.

It is an arithmetic number, because the mean of its divisors is an integer number (1370880).

Almost surely, 2^9998659 is an apocalyptic number.

9998659 is a deficient number, since it is larger than the sum of its proper divisors (968381).

9998659 is a wasteful number, since it uses less digits than its factorization.

9998659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4961.

The product of its digits is 1574640, while the sum is 55.

The square root of 9998659 is about 3162.0656223425. The cubic root of 9998659 is about 215.4338382496.

The spelling of 9998659 in words is "nine million, nine hundred ninety-eight thousand, six hundred fifty-nine".