9988403 has 2 divisors, whose sum is σ = 9988404. Its totient is φ = 9988402.

The previous prime is 9988399. The next prime is 9988411. The reversal of 9988403 is 3048899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9988403 - 2² = 9988399 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (9988453) 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, 4994201 + 4994202.

It is an arithmetic number, because the mean of its divisors is an integer number (4994202).

Almost surely, 2^9988403 is an apocalyptic number.

9988403 is a deficient number, since it is larger than the sum of its proper divisors (1).

9988403 is an equidigital number, since it uses as much as digits as its factorization.

9988403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 9988403 is about 3160.4434815386. The cubic root of 9988403 is about 215.3601535242.

The spelling of 9988403 in words is "nine million, nine hundred eighty-eight thousand, four hundred three".