247266257939 has 2 divisors, whose sum is σ = 247266257940. Its totient is φ = 247266257938.

The previous prime is 247266257839. The next prime is 247266257951. The reversal of 247266257939 is 939752662742.

247266257939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247266257939 is a prime.

It is a super-2 number, since 2×247266257939² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (247266257839) 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, 123633128969 + 123633128970.

It is an arithmetic number, because the mean of its divisors is an integer number (123633128970).

Almost surely, 2^247266257939 is an apocalyptic number.

247266257939 is a deficient number, since it is larger than the sum of its proper divisors (1).

247266257939 is an equidigital number, since it uses as much as digits as its factorization.

247266257939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68584320, while the sum is 62.

The spelling of 247266257939 in words is "two hundred forty-seven billion, two hundred sixty-six million, two hundred fifty-seven thousand, nine hundred thirty-nine".