4083691 has 2 divisors, whose sum is σ = 4083692. Its totient is φ = 4083690.

The previous prime is 4083671. The next prime is 4083697. The reversal of 4083691 is 1963804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4083691 - 2⁵ = 4083659 is a prime.

4083691 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (4083697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2041845 + 2041846.

It is an arithmetic number, because the mean of its divisors is an integer number (2041846).

Almost surely, 2^4083691 is an apocalyptic number.

4083691 is a deficient number, since it is larger than the sum of its proper divisors (1).

4083691 is an equidigital number, since it uses as much as digits as its factorization.

4083691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 4083691 is about 2020.8144397742. The cubic root of 4083691 is about 159.8395657466.

It can be divided in two parts, 4083 and 691, that added together give a palindrome (4774).

The spelling of 4083691 in words is "four million, eighty-three thousand, six hundred ninety-one".