5021139209 has 2 divisors, whose sum is σ = 5021139210. Its totient is φ = 5021139208.

The previous prime is 5021139191. The next prime is 5021139247. The reversal of 5021139209 is 9029311205.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3513525625 + 1507613584 = 59275^2 + 38828^2 .

It is a cyclic number.

It is not a de Polignac number, because 5021139209 - 2⁸ = 5021138953 is a prime.

It is not a weakly prime, because it can be changed into another prime (5021136209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2510569604 + 2510569605.

It is an arithmetic number, because the mean of its divisors is an integer number (2510569605).

Almost surely, 2^5021139209 is an apocalyptic number.

It is an amenable number.

5021139209 is a deficient number, since it is larger than the sum of its proper divisors (1).

5021139209 is an equidigital number, since it uses as much as digits as its factorization.

5021139209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 5021139209 is about 70859.9972410386. The cubic root of 5021139209 is about 1712.3823944242.

The spelling of 5021139209 in words is "five billion, twenty-one million, one hundred thirty-nine thousand, two hundred nine".