5105439749 has 2 divisors, whose sum is σ = 5105439750. Its totient is φ = 5105439748.

The previous prime is 5105439733. The next prime is 5105439797. The reversal of 5105439749 is 9479345015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3548584900 + 1556854849 = 59570^2 + 39457^2 .

It is a cyclic number.

It is not a de Polignac number, because 5105439749 - 2⁴ = 5105439733 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5105439049) 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, 2552719874 + 2552719875.

It is an arithmetic number, because the mean of its divisors is an integer number (2552719875).

Almost surely, 2^5105439749 is an apocalyptic number.

It is an amenable number.

5105439749 is a deficient number, since it is larger than the sum of its proper divisors (1).

5105439749 is an equidigital number, since it uses as much as digits as its factorization.

5105439749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 680400, while the sum is 47.

The square root of 5105439749 is about 71452.3599960141. The cubic root of 5105439749 is about 1721.9123930290.

The spelling of 5105439749 in words is "five billion, one hundred five million, four hundred thirty-nine thousand, seven hundred forty-nine".