40903 has 2 divisors, whose sum is σ = 40904. Its totient is φ = 40902.

The previous prime is 40897. The next prime is 40927. The reversal of 40903 is 30904.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40903 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 40903.

It is not a weakly prime, because it can be changed into another prime (40933) 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, 20451 + 20452.

It is an arithmetic number, because the mean of its divisors is an integer number (20452).

2⁴⁰⁹⁰³ is an apocalyptic number.

40903 is a deficient number, since it is larger than the sum of its proper divisors (1).

40903 is an equidigital number, since it uses as much as digits as its factorization.

40903 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 40903 is about 202.2449010482. The cubic root of 40903 is about 34.4549576726.

Subtracting from 40903 its reverse (30904), we obtain a palindrome (9999).

The spelling of 40903 in words is "forty thousand, nine hundred three".