2439791 has 2 divisors, whose sum is σ = 2439792. Its totient is φ = 2439790.

The previous prime is 2439781. The next prime is 2439803. The reversal of 2439791 is 1979342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2439791 - 2¹⁰ = 2438767 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2439781) 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, 1219895 + 1219896.

It is an arithmetic number, because the mean of its divisors is an integer number (1219896).

2^2439791 is an apocalyptic number.

2439791 is a deficient number, since it is larger than the sum of its proper divisors (1).

2439791 is an equidigital number, since it uses as much as digits as its factorization.

2439791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 35.

The square root of 2439791 is about 1561.9830344789. The cubic root of 2439791 is about 134.6224659969.

The spelling of 2439791 in words is "two million, four hundred thirty-nine thousand, seven hundred ninety-one".