4247276749 has 2 divisors, whose sum is σ = 4247276750. Its totient is φ = 4247276748.

The previous prime is 4247276689. The next prime is 4247276771. The reversal of 4247276749 is 9476727424.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4075928649 + 171348100 = 63843^2 + 13090^2 .

It is a cyclic number.

It is not a de Polignac number, because 4247276749 - 2⁹ = 4247276237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4247276696 and 4247276705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4247270749) 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, 2123638374 + 2123638375.

It is an arithmetic number, because the mean of its divisors is an integer number (2123638375).

Almost surely, 2^4247276749 is an apocalyptic number.

It is an amenable number.

4247276749 is a deficient number, since it is larger than the sum of its proper divisors (1).

4247276749 is an equidigital number, since it uses as much as digits as its factorization.

4247276749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4741632, while the sum is 52.

The square root of 4247276749 is about 65171.1343234104. The cubic root of 4247276749 is about 1619.4598551061.

The spelling of 4247276749 in words is "four billion, two hundred forty-seven million, two hundred seventy-six thousand, seven hundred forty-nine".