4381005 has 16 divisors (see below), whose sum is σ = 7084224. Its totient is φ = 2311680.

The previous prime is 4380991. The next prime is 4381007. The reversal of 4381005 is 5001834.

It is not a de Polignac number, because 4381005 - 2¹³ = 4372813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4381007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51 + ... + 2960.

It is an arithmetic number, because the mean of its divisors is an integer number (442764).

Almost surely, 2^4381005 is an apocalyptic number.

It is an amenable number.

4381005 is a deficient number, since it is larger than the sum of its proper divisors (2703219).

4381005 is a wasteful number, since it uses less digits than its factorization.

4381005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3116.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 4381005 is about 2093.0850436616. The cubic root of 4381005 is about 163.6281108352.

Adding to 4381005 its reverse (5001834), we get a palindrome (9382839).

The spelling of 4381005 in words is "four million, three hundred eighty-one thousand, five".