1144456769 has 2 divisors, whose sum is σ = 1144456770. Its totient is φ = 1144456768.

The previous prime is 1144456637. The next prime is 1144456771. The reversal of 1144456769 is 9676544411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 736416769 + 408040000 = 27137^2 + 20200^2 .

It is an emirp because it is prime and its reverse (9676544411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1144456769 - 2¹⁶ = 1144391233 is a prime.

It is a super-2 number, since 2×1144456769² = 2619562592219838722, which contains 22 as substring.

Together with 1144456771, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1144456169) 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, 572228384 + 572228385.

It is an arithmetic number, because the mean of its divisors is an integer number (572228385).

Almost surely, 2^1144456769 is an apocalyptic number.

It is an amenable number.

1144456769 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144456769 is an equidigital number, since it uses as much as digits as its factorization.

1144456769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 47.

The square root of 1144456769 is about 33829.8207059984. The cubic root of 1144456769 is about 1046.0034831657.

The spelling of 1144456769 in words is "one billion, one hundred forty-four million, four hundred fifty-six thousand, seven hundred sixty-nine".