144189779 has 2 divisors, whose sum is σ = 144189780. Its totient is φ = 144189778.

The previous prime is 144189763. The next prime is 144189797. The reversal of 144189779 is 977981441.

Together with next prime (144189797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144189779 - 2⁴ = 144189763 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (144189709) 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, 72094889 + 72094890.

It is an arithmetic number, because the mean of its divisors is an integer number (72094890).

Almost surely, 2^144189779 is an apocalyptic number.

144189779 is a deficient number, since it is larger than the sum of its proper divisors (1).

144189779 is an equidigital number, since it uses as much as digits as its factorization.

144189779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 50.

The square root of 144189779 is about 12007.9048547197. The cubic root of 144189779 is about 524.3784377993.

The spelling of 144189779 in words is "one hundred forty-four million, one hundred eighty-nine thousand, seven hundred seventy-nine".