4065091 has 16 divisors (see below), whose sum is σ = 4523904. Its totient is φ = 3636864.

The previous prime is 4065073. The next prime is 4065097. The reversal of 4065091 is 1905604.

4065091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 4065091 - 2⁵ = 4065059 is a prime.

4065091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4065097) 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, 48936 + ... + 49018.

It is an arithmetic number, because the mean of its divisors is an integer number (282744).

Almost surely, 2^4065091 is an apocalyptic number.

4065091 is a deficient number, since it is larger than the sum of its proper divisors (458813).

4065091 is a wasteful number, since it uses less digits than its factorization.

4065091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 4065091 is about 2016.2070826183. The cubic root of 4065091 is about 159.5965224544.

The spelling of 4065091 in words is "four million, sixty-five thousand, ninety-one".