5208746689 has 4 divisors (see below), whose sum is σ = 5210157780. Its totient is φ = 5207335600.

The previous prime is 5208746657. The next prime is 5208746747. The reversal of 5208746689 is 9866478025.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1266790464 + 3941956225 = 35592^2 + 62785^2 .

It is a cyclic number.

It is not a de Polignac number, because 5208746689 - 2⁵ = 5208746657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5208746489) 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, 699994 + ... + 707395.

It is an arithmetic number, because the mean of its divisors is an integer number (1302539445).

Almost surely, 2^5208746689 is an apocalyptic number.

It is an amenable number.

5208746689 is a deficient number, since it is larger than the sum of its proper divisors (1411091).

5208746689 is a wasteful number, since it uses less digits than its factorization.

5208746689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411090.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The square root of 5208746689 is about 72171.6474039494. The cubic root of 5208746689 is about 1733.4490414334.

The spelling of 5208746689 in words is "five billion, two hundred eight million, seven hundred forty-six thousand, six hundred eighty-nine".