144572789 has 2 divisors, whose sum is σ = 144572790. Its totient is φ = 144572788.

The previous prime is 144572761. The next prime is 144572819. The reversal of 144572789 is 987275441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126382564 + 18190225 = 11242^2 + 4265^2 .

It is a cyclic number.

It is not a de Polignac number, because 144572789 - 2¹² = 144568693 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144572719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72286394 + 72286395.

It is an arithmetic number, because the mean of its divisors is an integer number (72286395).

Almost surely, 2^144572789 is an apocalyptic number.

It is an amenable number.

144572789 is a deficient number, since it is larger than the sum of its proper divisors (1).

144572789 is an equidigital number, since it uses as much as digits as its factorization.

144572789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480, while the sum is 47.

The square root of 144572789 is about 12023.8425222555. The cubic root of 144572789 is about 524.8423278593.

The spelling of 144572789 in words is "one hundred forty-four million, five hundred seventy-two thousand, seven hundred eighty-nine".