247367983 has 2 divisors, whose sum is σ = 247367984. Its totient is φ = 247367982.

The previous prime is 247367947. The next prime is 247368007. The reversal of 247367983 is 389763742.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247367983 is a prime.

It is a super-2 number, since 2×247367983² = 122381838026976578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247377983) 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 as a sum of consecutive naturals, namely, 123683991 + 123683992.

It is an arithmetic number, because the mean of its divisors is an integer number (123683992).

Almost surely, 2^247367983 is an apocalyptic number.

247367983 is a deficient number, since it is larger than the sum of its proper divisors (1).

247367983 is an equidigital number, since it uses as much as digits as its factorization.

247367983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 49.

The square root of 247367983 is about 15727.9363872060. The cubic root of 247367983 is about 627.7419651716.

The spelling of 247367983 in words is "two hundred forty-seven million, three hundred sixty-seven thousand, nine hundred eighty-three".