5439009949 has 2 divisors, whose sum is σ = 5439009950. Its totient is φ = 5439009948.

The previous prime is 5439009941. The next prime is 5439009967. The reversal of 5439009949 is 9499009345.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3717340900 + 1721669049 = 60970^2 + 41493^2 .

It is a cyclic number.

It is not a de Polignac number, because 5439009949 - 2³ = 5439009941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5439009896 and 5439009905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5439009941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2719504974 + 2719504975.

It is an arithmetic number, because the mean of its divisors is an integer number (2719504975).

Almost surely, 2^5439009949 is an apocalyptic number.

It is an amenable number.

5439009949 is a deficient number, since it is larger than the sum of its proper divisors (1).

5439009949 is an equidigital number, since it uses as much as digits as its factorization.

5439009949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1574640, while the sum is 52.

The square root of 5439009949 is about 73749.6437211733. The cubic root of 5439009949 is about 1758.6251691152.

The spelling of 5439009949 in words is "five billion, four hundred thirty-nine million, nine thousand, nine hundred forty-nine".