4081903 has 16 divisors (see below), whose sum is σ = 5022720. Its totient is φ = 3239136.

The previous prime is 4081897. The next prime is 4081933. The reversal of 4081903 is 3091804.

It is a cyclic number.

It is not a de Polignac number, because 4081903 - 2⁵ = 4081871 is a prime.

It is a Duffinian number.

4081903 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4081933) 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, 5925 + ... + 6577.

It is an arithmetic number, because the mean of its divisors is an integer number (313920).

Almost surely, 2^4081903 is an apocalyptic number.

4081903 is a deficient number, since it is larger than the sum of its proper divisors (940817).

4081903 is a wasteful number, since it uses less digits than its factorization.

4081903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 4081903 is about 2020.3719954503. The cubic root of 4081903 is about 159.8162343319.

Subtracting from 4081903 its reverse (3091804), we obtain a palindrome (990099).

The spelling of 4081903 in words is "four million, eighty-one thousand, nine hundred three".