899903 has 2 divisors, whose sum is σ = 899904. Its totient is φ = 899902.

The previous prime is 899893. The next prime is 899917. The reversal of 899903 is 309998.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 899903 - 2¹⁶ = 834367 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (893903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449951 + 449952.

It is an arithmetic number, because the mean of its divisors is an integer number (449952).

2⁸⁹⁹⁹⁰³ is an apocalyptic number.

899903 is a deficient number, since it is larger than the sum of its proper divisors (1).

899903 is an equidigital number, since it uses as much as digits as its factorization.

899903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 899903 is about 948.6321731841. The cubic root of 899903 is about 96.5454697259.

The spelling of 899903 in words is "eight hundred ninety-nine thousand, nine hundred three".