904903 has 2 divisors, whose sum is σ = 904904. Its totient is φ = 904902.

The previous prime is 904901. The next prime is 904907. The reversal of 904903 is 309409.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 904903 - 2¹ = 904901 is a prime.

Together with 904901, it forms a pair of twin primes.

904903 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (904901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452451 + 452452.

It is an arithmetic number, because the mean of its divisors is an integer number (452452).

2⁹⁰⁴⁹⁰³ is an apocalyptic number.

904903 is a deficient number, since it is larger than the sum of its proper divisors (1).

904903 is an equidigital number, since it uses as much as digits as its factorization.

904903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 904903 is about 951.2638960877. The cubic root of 904903 is about 96.7239467626.

The spelling of 904903 in words is "nine hundred four thousand, nine hundred three".