4091863 has 2 divisors, whose sum is σ = 4091864. Its totient is φ = 4091862.

The previous prime is 4091833. The next prime is 4091873. The reversal of 4091863 is 3681904.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4091863 - 2⁵ = 4091831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4091833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2045931 + 2045932.

It is an arithmetic number, because the mean of its divisors is an integer number (2045932).

Almost surely, 2^4091863 is an apocalyptic number.

4091863 is a deficient number, since it is larger than the sum of its proper divisors (1).

4091863 is an equidigital number, since it uses as much as digits as its factorization.

4091863 is an odious number, because the sum of its binary digits is odd.

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

The square root of 4091863 is about 2022.8353862833. The cubic root of 4091863 is about 159.9461146669.

The spelling of 4091863 in words is "four million, ninety-one thousand, eight hundred sixty-three".