4081859 has 4 divisors (see below), whose sum is σ = 4091400. Its totient is φ = 4072320.

The previous prime is 4081849. The next prime is 4081867. The reversal of 4081859 is 9581804.

4081859 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.

It is a cyclic number.

It is not a de Polignac number, because 4081859 - 2¹² = 4077763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4081849) 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, 4097 + ... + 4994.

It is an arithmetic number, because the mean of its divisors is an integer number (1022850).

Almost surely, 2^4081859 is an apocalyptic number.

4081859 is a deficient number, since it is larger than the sum of its proper divisors (9541).

4081859 is an equidigital number, since it uses as much as digits as its factorization.

4081859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9540.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 4081859 is about 2020.3611063372. The cubic root of 4081859 is about 159.8156600949.

Subtracting 4081859 from its reverse (9581804), we obtain a palindrome (5499945).

The spelling of 4081859 in words is "four million, eighty-one thousand, eight hundred fifty-nine".