9998503 has 8 divisors (see below), whose sum is σ = 10724400. Its totient is φ = 9292608.

The previous prime is 9998479. The next prime is 9998539. The reversal of 9998503 is 3058999.

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 9998503 - 2⁹ = 9997991 is a prime.

It is a Duffinian number.

9998503 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 9998503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998543) 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, 3958 + ... + 5971.

It is an arithmetic number, because the mean of its divisors is an integer number (1340550).

Almost surely, 2^9998503 is an apocalyptic number.

9998503 is a deficient number, since it is larger than the sum of its proper divisors (725897).

9998503 is a wasteful number, since it uses less digits than its factorization.

9998503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10001.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 9998503 is about 3162.0409548265. The cubic root of 9998503 is about 215.4327178376.

It can be divided in two parts, 9998 and 503, that added together give a palindrome (10501).

The spelling of 9998503 in words is "nine million, nine hundred ninety-eight thousand, five hundred three".