5208449747 has 4 divisors (see below), whose sum is σ = 5226226320. Its totient is φ = 5190673176.

The previous prime is 5208449711. The next prime is 5208449767. The reversal of 5208449747 is 7479448025.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5208449747 - 2⁶ = 5208449683 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5208449695 and 5208449704.

It is not an unprimeable number, because it can be changed into a prime (5208449767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8887847 + ... + 8888432.

It is an arithmetic number, because the mean of its divisors is an integer number (1306556580).

Almost surely, 2^5208449747 is an apocalyptic number.

5208449747 is a deficient number, since it is larger than the sum of its proper divisors (17776573).

5208449747 is a wasteful number, since it uses less digits than its factorization.

5208449747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17776572.

The product of its (nonzero) digits is 2257920, while the sum is 50.

The square root of 5208449747 is about 72169.5901817379. The cubic root of 5208449747 is about 1733.4161004569.

The spelling of 5208449747 in words is "five billion, two hundred eight million, four hundred forty-nine thousand, seven hundred forty-seven".