144669887 has 2 divisors, whose sum is σ = 144669888. Its totient is φ = 144669886.

The previous prime is 144669871. The next prime is 144669907. The reversal of 144669887 is 788966441.

It is a weak prime.

It is an emirp because it is prime and its reverse (788966441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144669887 - 2⁴ = 144669871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144669787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72334943 + 72334944.

It is an arithmetic number, because the mean of its divisors is an integer number (72334944).

Almost surely, 2^144669887 is an apocalyptic number.

144669887 is a deficient number, since it is larger than the sum of its proper divisors (1).

144669887 is an equidigital number, since it uses as much as digits as its factorization.

144669887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2322432, while the sum is 53.

The square root of 144669887 is about 12027.8795720609. The cubic root of 144669887 is about 524.9597997941.

The spelling of 144669887 in words is "one hundred forty-four million, six hundred sixty-nine thousand, eight hundred eighty-seven".