4081289 has 4 divisors (see below), whose sum is σ = 4085760. Its totient is φ = 4076820.

The previous prime is 4081283. The next prime is 4081303. The reversal of 4081289 is 9821804.

It is a happy number.

4081289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4081289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4081283) 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 3 ways as a sum of consecutive naturals, for example, 317 + ... + 2874.

It is an arithmetic number, because the mean of its divisors is an integer number (1021440).

Almost surely, 2^4081289 is an apocalyptic number.

It is an amenable number.

4081289 is a deficient number, since it is larger than the sum of its proper divisors (4471).

4081289 is a wasteful number, since it uses less digits than its factorization.

4081289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4470.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 4081289 is about 2020.2200375207. The cubic root of 4081289 is about 159.8082207422.

The spelling of 4081289 in words is "four million, eighty-one thousand, two hundred eighty-nine".