144723569 has 2 divisors, whose sum is σ = 144723570. Its totient is φ = 144723568.

The previous prime is 144723517. The next prime is 144723581. The reversal of 144723569 is 965327441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139830625 + 4892944 = 11825^2 + 2212^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144723569 is a prime.

It is a super-2 number, since 2×144723569² = 41889822848195522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (144723269) 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, 72361784 + 72361785.

It is an arithmetic number, because the mean of its divisors is an integer number (72361785).

Almost surely, 2^144723569 is an apocalyptic number.

It is an amenable number.

144723569 is a deficient number, since it is larger than the sum of its proper divisors (1).

144723569 is an equidigital number, since it uses as much as digits as its factorization.

144723569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 41.

The square root of 144723569 is about 12030.1109304944. The cubic root of 144723569 is about 525.0247232499.

The spelling of 144723569 in words is "one hundred forty-four million, seven hundred twenty-three thousand, five hundred sixty-nine".