4030591 has 2 divisors, whose sum is σ = 4030592. Its totient is φ = 4030590.

The previous prime is 4030577. The next prime is 4030613. The reversal of 4030591 is 1950304.

It is an a-pointer prime, because the next prime (4030613) can be obtained adding 4030591 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4030591 - 2⁷ = 4030463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4030511) 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, 2015295 + 2015296.

It is an arithmetic number, because the mean of its divisors is an integer number (2015296).

Almost surely, 2^4030591 is an apocalyptic number.

4030591 is a deficient number, since it is larger than the sum of its proper divisors (1).

4030591 is an equidigital number, since it uses as much as digits as its factorization.

4030591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 4030591 is about 2007.6331836269. The cubic root of 4030591 is about 159.1437461703.

Adding to 4030591 its reverse (1950304), we get a palindrome (5980895).

The spelling of 4030591 in words is "four million, thirty thousand, five hundred ninety-one".