144840889 has 2 divisors, whose sum is σ = 144840890. Its totient is φ = 144840888.

The previous prime is 144840881. The next prime is 144840947. The reversal of 144840889 is 988048441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144000000 + 840889 = 12000^2 + 917^2 .

It is a cyclic number.

It is not a de Polignac number, because 144840889 - 2³ = 144840881 is a prime.

It is not a weakly prime, because it can be changed into another prime (144840881) 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, 72420444 + 72420445.

It is an arithmetic number, because the mean of its divisors is an integer number (72420445).

Almost surely, 2^144840889 is an apocalyptic number.

It is an amenable number.

144840889 is a deficient number, since it is larger than the sum of its proper divisors (1).

144840889 is an equidigital number, since it uses as much as digits as its factorization.

144840889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 294912, while the sum is 46.

The square root of 144840889 is about 12034.9860407065. The cubic root of 144840889 is about 525.1665551672.

It can be divided in two parts, 144 and 840889, that multiplied together give a square (121088016 = 11004²).

The spelling of 144840889 in words is "one hundred forty-four million, eight hundred forty thousand, eight hundred eighty-nine".