9998983 has 4 divisors (see below), whose sum is σ = 10054408. Its totient is φ = 9943560.

The previous prime is 9998977. The next prime is 9999047. The reversal of 9998983 is 3898999.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9998983 is a prime.

It is a super-2 number, since 2×9998983² = 199959322068578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27441 + ... + 27802.

It is an arithmetic number, because the mean of its divisors is an integer number (2513602).

Almost surely, 2^9998983 is an apocalyptic number.

9998983 is a deficient number, since it is larger than the sum of its proper divisors (55425).

9998983 is a wasteful number, since it uses less digits than its factorization.

9998983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55424.

The product of its digits is 1259712, while the sum is 55.

The square root of 9998983 is about 3162.1168542608. The cubic root of 9998983 is about 215.4361652220.

The spelling of 9998983 in words is "nine million, nine hundred ninety-eight thousand, nine hundred eighty-three".