801903 has 4 divisors (see below), whose sum is σ = 1069208. Its totient is φ = 534600.

The previous prime is 801883. The next prime is 801947. The reversal of 801903 is 309108.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 801903 - 2¹⁰ = 800879 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 801903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133648 + ... + 133653.

It is an arithmetic number, because the mean of its divisors is an integer number (267302).

2⁸⁰¹⁹⁰³ is an apocalyptic number.

801903 is a deficient number, since it is larger than the sum of its proper divisors (267305).

801903 is a wasteful number, since it uses less digits than its factorization.

801903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267304.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 801903 is about 895.4903684574. The cubic root of 801903 is about 92.9053262473.

The spelling of 801903 in words is "eight hundred one thousand, nine hundred three".