4003881 has 16 divisors (see below), whose sum is σ = 6267264. Its totient is φ = 2225664.

The previous prime is 4003877. The next prime is 4003913. The reversal of 4003881 is 1883004.

It is not a de Polignac number, because 4003881 - 2² = 4003877 is a prime.

It is a super-2 number, since 2×4003881² = 32062126124322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4003841) 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, 1800 + ... + 3353.

It is an arithmetic number, because the mean of its divisors is an integer number (391704).

Almost surely, 2^4003881 is an apocalyptic number.

It is an amenable number.

4003881 is a deficient number, since it is larger than the sum of its proper divisors (2263383).

4003881 is a wasteful number, since it uses less digits than its factorization.

4003881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5200.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 4003881 is about 2000.9700147678. The cubic root of 4003881 is about 158.7914277975.

Adding to 4003881 its reverse (1883004), we get a palindrome (5886885).

It can be divided in two parts, 4003 and 881, that added together give a palindrome (4884).

The spelling of 4003881 in words is "four million, three thousand, eight hundred eighty-one".