144408989 has 2 divisors, whose sum is σ = 144408990. Its totient is φ = 144408988.

The previous prime is 144408983. The next prime is 144409073. The reversal of 144408989 is 989804441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111724900 + 32684089 = 10570^2 + 5717^2 .

It is an emirp because it is prime and its reverse (989804441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144408989 - 2¹² = 144404893 is a prime.

It is a super-2 number, since 2×144408989² = 41707912208004242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144408983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72204494 + 72204495.

It is an arithmetic number, because the mean of its divisors is an integer number (72204495).

Almost surely, 2^144408989 is an apocalyptic number.

It is an amenable number.

144408989 is a deficient number, since it is larger than the sum of its proper divisors (1).

144408989 is an equidigital number, since it uses as much as digits as its factorization.

144408989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 144408989 is about 12017.0291253704. The cubic root of 144408989 is about 524.6440386749.

The spelling of 144408989 in words is "one hundred forty-four million, four hundred eight thousand, nine hundred eighty-nine".