800903 has 2 divisors, whose sum is σ = 800904. Its totient is φ = 800902.

The previous prime is 800897. The next prime is 800909. The reversal of 800903 is 309008.

It is a balanced prime because it is at equal distance from previous prime (800897) and next prime (800909).

It is a cyclic number.

It is not a de Polignac number, because 800903 - 2⁸ = 800647 is a prime.

It is an Ulam number.

It is equal to p₆₄₀₂₈ and since 800903 and 64028 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (800909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400451 + 400452.

It is an arithmetic number, because the mean of its divisors is an integer number (400452).

2⁸⁰⁰⁹⁰³ is an apocalyptic number.

800903 is a deficient number, since it is larger than the sum of its proper divisors (1).

800903 is an equidigital number, since it uses as much as digits as its factorization.

800903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 800903 is about 894.9318409801. The cubic root of 800903 is about 92.8666914948.

The spelling of 800903 in words is "eight hundred thousand, nine hundred three".