2004424391 has 2 divisors, whose sum is σ = 2004424392. Its totient is φ = 2004424390.

The previous prime is 2004424343. The next prime is 2004424483. The reversal of 2004424391 is 1934244002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2004424391 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2004424991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002212195 + 1002212196.

It is an arithmetic number, because the mean of its divisors is an integer number (1002212196).

Almost surely, 2^2004424391 is an apocalyptic number.

2004424391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2004424391 is an equidigital number, since it uses as much as digits as its factorization.

2004424391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 2004424391 is about 44770.7984181654. The cubic root of 2004424391 is about 1260.8494295376.

Adding to 2004424391 its reverse (1934244002), we get a palindrome (3938668393).

The spelling of 2004424391 in words is "two billion, four million, four hundred twenty-four thousand, three hundred ninety-one".