144335749 has 2 divisors, whose sum is σ = 144335750. Its totient is φ = 144335748.

The previous prime is 144335717. The next prime is 144335777. The reversal of 144335749 is 947533441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119902500 + 24433249 = 10950^2 + 4943^2 .

It is a cyclic number.

It is not a de Polignac number, because 144335749 - 2⁵ = 144335717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144315749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72167874 + 72167875.

It is an arithmetic number, because the mean of its divisors is an integer number (72167875).

Almost surely, 2^144335749 is an apocalyptic number.

It is an amenable number.

144335749 is a deficient number, since it is larger than the sum of its proper divisors (1).

144335749 is an equidigital number, since it uses as much as digits as its factorization.

144335749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 40.

The square root of 144335749 is about 12013.9813966894. The cubic root of 144335749 is about 524.5553289911. Note that the first 3 decimals are identical.

The spelling of 144335749 in words is "one hundred forty-four million, three hundred thirty-five thousand, seven hundred forty-nine".