90403 has 2 divisors, whose sum is σ = 90404. Its totient is φ = 90402.

The previous prime is 90401. The next prime is 90407. The reversal of 90403 is 30409.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90403 - 2¹ = 90401 is a prime.

Together with 90401, it forms a pair of twin primes.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (90401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45201 + 45202.

It is an arithmetic number, because the mean of its divisors is an integer number (45202).

2⁹⁰⁴⁰³ is an apocalyptic number.

90403 is a deficient number, since it is larger than the sum of its proper divisors (1).

90403 is an equidigital number, since it uses as much as digits as its factorization.

90403 is an odious number, because the sum of its binary digits is odd.

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

The square root of 90403 is about 300.6709164519. The cubic root of 90403 is about 44.8808369903.

The spelling of 90403 in words is "ninety thousand, four hundred three".