9998903 has 2 divisors, whose sum is σ = 9998904. Its totient is φ = 9998902.

The previous prime is 9998893. The next prime is 9998929. The reversal of 9998903 is 3098999.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3098999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9998903 - 2⁴ = 9998887 is a prime.

It is a super-2 number, since 2×9998903² = 199956122406818, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9998203) 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 as a sum of consecutive naturals, namely, 4999451 + 4999452.

It is an arithmetic number, because the mean of its divisors is an integer number (4999452).

Almost surely, 2^9998903 is an apocalyptic number.

9998903 is a deficient number, since it is larger than the sum of its proper divisors (1).

9998903 is an equidigital number, since it uses as much as digits as its factorization.

9998903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 47.

The square root of 9998903 is about 3162.1042044816. The cubic root of 9998903 is about 215.4355906656.

It can be divided in two parts, 9998 and 903, that added together give a palindrome (10901).

The spelling of 9998903 in words is "nine million, nine hundred ninety-eight thousand, nine hundred three".