144444919 has 2 divisors, whose sum is σ = 144444920. Its totient is φ = 144444918.

The previous prime is 144444917. The next prime is 144444977. The reversal of 144444919 is 919444441.

It is a weak prime.

It is an emirp because it is prime and its reverse (919444441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144444919 - 2¹ = 144444917 is a prime.

It is a super-2 number, since 2×144444919² = 41728669249833122, which contains 22 as substring.

Together with 144444917, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144444917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72222459 + 72222460.

It is an arithmetic number, because the mean of its divisors is an integer number (72222460).

Almost surely, 2^144444919 is an apocalyptic number.

144444919 is a deficient number, since it is larger than the sum of its proper divisors (1).

144444919 is an equidigital number, since it uses as much as digits as its factorization.

144444919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 40.

The square root of 144444919 is about 12018.5239942349. The cubic root of 144444919 is about 524.6875468094.

The spelling of 144444919 in words is "one hundred forty-four million, four hundred forty-four thousand, nine hundred nineteen".