9403 has 2 divisors, whose sum is σ = 9404. Its totient is φ = 9402.

The previous prime is 9397. The next prime is 9413. The reversal of 9403 is 3049.

9403 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (3049) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9403 - 2⁵ = 9371 is a prime.

9403 is a lucky number.

It is a plaindrome in base 15 and base 16.

It is not a weakly prime, because it can be changed into another prime (9413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4701 + 4702.

It is an arithmetic number, because the mean of its divisors is an integer number (4702).

2⁹⁴⁰³ is an apocalyptic number.

9403 is a deficient number, since it is larger than the sum of its proper divisors (1).

9403 is an equidigital number, since it uses as much as digits as its factorization.

9403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 9403 is about 96.9690672328. The cubic root of 9403 is about 21.1067878702.

The spelling of 9403 in words is "nine thousand, four hundred three".