9998951 has 8 divisors (see below), whose sum is σ = 10567680. Its totient is φ = 9441432.

The previous prime is 9998929. The next prime is 9998969. The reversal of 9998951 is 1598999.

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 9998951 - 2⁶ = 9998887 is a prime.

It is a super-2 number, since 2×9998951² = 199958042200802, 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 9998951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 935 + ... + 4568.

It is an arithmetic number, because the mean of its divisors is an integer number (1320960).

Almost surely, 2^9998951 is an apocalyptic number.

9998951 is a deficient number, since it is larger than the sum of its proper divisors (568729).

9998951 is a wasteful number, since it uses less digits than its factorization.

9998951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5605.

The product of its digits is 262440, while the sum is 50.

The square root of 9998951 is about 3162.1117943552. Note that the first 3 decimals coincide. The cubic root of 9998951 is about 215.4359353998.

The spelling of 9998951 in words is "nine million, nine hundred ninety-eight thousand, nine hundred fifty-one".