9987403 has 2 divisors, whose sum is σ = 9987404. Its totient is φ = 9987402.

The previous prime is 9987391. The next prime is 9987413. The reversal of 9987403 is 3047899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9987403 - 2²¹ = 7890251 is a prime.

It is not a weakly prime, because it can be changed into another prime (9987413) 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, 4993701 + 4993702.

It is an arithmetic number, because the mean of its divisors is an integer number (4993702).

Almost surely, 2^9987403 is an apocalyptic number.

9987403 is a deficient number, since it is larger than the sum of its proper divisors (1).

9987403 is an equidigital number, since it uses as much as digits as its factorization.

9987403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 9987403 is about 3160.2852719335. The cubic root of 9987403 is about 215.3529662778.

The spelling of 9987403 in words is "nine million, nine hundred eighty-seven thousand, four hundred three".