5205039947 has 2 divisors, whose sum is σ = 5205039948. Its totient is φ = 5205039946.

The previous prime is 5205039919. The next prime is 5205039971. The reversal of 5205039947 is 7499305025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5205039947 - 2²⁶ = 5137931083 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5205039898 and 5205039907.

It is not a weakly prime, because it can be changed into another prime (5205039647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2602519973 + 2602519974.

It is an arithmetic number, because the mean of its divisors is an integer number (2602519974).

Almost surely, 2^5205039947 is an apocalyptic number.

5205039947 is a deficient number, since it is larger than the sum of its proper divisors (1).

5205039947 is an equidigital number, since it uses as much as digits as its factorization.

5205039947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 340200, while the sum is 44.

The square root of 5205039947 is about 72145.9627907203. The cubic root of 5205039947 is about 1733.0377477927.

The spelling of 5205039947 in words is "five billion, two hundred five million, thirty-nine thousand, nine hundred forty-seven".