4075891 has 2 divisors, whose sum is σ = 4075892. Its totient is φ = 4075890.

The previous prime is 4075889. The next prime is 4075909. The reversal of 4075891 is 1985704.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4075891 - 2¹ = 4075889 is a prime.

It is a super-2 number, since 2×4075891² = 33225774887762, which contains 22 as substring.

Together with 4075889, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4075831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2037945 + 2037946.

It is an arithmetic number, because the mean of its divisors is an integer number (2037946).

Almost surely, 2^4075891 is an apocalyptic number.

4075891 is a deficient number, since it is larger than the sum of its proper divisors (1).

4075891 is an equidigital number, since it uses as much as digits as its factorization.

4075891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 4075891 is about 2018.8836023902. The cubic root of 4075891 is about 159.7377344021.

The spelling of 4075891 in words is "four million, seventy-five thousand, eight hundred ninety-one".