40803 has 16 divisors (see below), whose sum is σ = 65280. Its totient is φ = 22176.

The previous prime is 40801. The next prime is 40813. The reversal of 40803 is 30804.

It is a Cunningham number, because it is equal to 202²-1.

It is not a de Polignac number, because 40803 - 2¹ = 40801 is a prime.

40803 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (40801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 576 + ... + 642.

It is an arithmetic number, because the mean of its divisors is an integer number (4080).

2⁴⁰⁸⁰³ is an apocalyptic number.

40803 is a deficient number, since it is larger than the sum of its proper divisors (24477).

40803 is a wasteful number, since it uses less digits than its factorization.

40803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 40803 is about 201.9975247373. The cubic root of 40803 is about 34.4268561687.

Subtracting from 40803 its reverse (30804), we obtain a palindrome (9999).

The spelling of 40803 in words is "forty thousand, eight hundred three".