144940769 has 2 divisors, whose sum is σ = 144940770. Its totient is φ = 144940768.

The previous prime is 144940727. The next prime is 144940771. The reversal of 144940769 is 967049441.

144940769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141895744 + 3045025 = 11912^2 + 1745^2 .

It is a cyclic number.

It is not a de Polignac number, because 144940769 - 2⁸ = 144940513 is a prime.

It is a super-2 number, since 2×144940769² = 42015653036622722, which contains 22 as substring.

Together with 144940771, 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 (144940709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72470384 + 72470385.

It is an arithmetic number, because the mean of its divisors is an integer number (72470385).

Almost surely, 2^144940769 is an apocalyptic number.

It is an amenable number.

144940769 is a deficient number, since it is larger than the sum of its proper divisors (1).

144940769 is an equidigital number, since it uses as much as digits as its factorization.

144940769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 144940769 is about 12039.1348941691. The cubic root of 144940769 is about 525.2872429634.

The spelling of 144940769 in words is "one hundred forty-four million, nine hundred forty thousand, seven hundred sixty-nine".