4999591 has 2 divisors, whose sum is σ = 4999592. Its totient is φ = 4999590.

The previous prime is 4999559. The next prime is 4999597. The reversal of 4999591 is 1959994.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4999591 - 2⁵ = 4999559 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4999597) 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 as a sum of consecutive naturals, namely, 2499795 + 2499796.

It is an arithmetic number, because the mean of its divisors is an integer number (2499796).

Almost surely, 2^4999591 is an apocalyptic number.

4999591 is a deficient number, since it is larger than the sum of its proper divisors (1).

4999591 is an equidigital number, since it uses as much as digits as its factorization.

4999591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131220, while the sum is 46.

The square root of 4999591 is about 2235.9765204492. The cubic root of 4999591 is about 170.9929320061.

It can be divided in two parts, 49995 and 91, that added together give a triangular number (50086 = T₃₁₆).

The spelling of 4999591 in words is "four million, nine hundred ninety-nine thousand, five hundred ninety-one".