144269389 has 12 divisors (see below), whose sum is σ = 160759228. Its totient is φ = 129349440.

The previous prime is 144269387. The next prime is 144269393. The reversal of 144269389 is 983962441.

It can be written as a sum of positive squares in 2 ways, for example, as 41409225 + 102860164 = 6435^2 + 10142^2 .

It is not a de Polignac number, because 144269389 - 2¹ = 144269387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144269387) 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 in 11 ways as a sum of consecutive naturals, for example, 667 + ... + 16999.

Almost surely, 2^144269389 is an apocalyptic number.

It is an amenable number.

144269389 is a deficient number, since it is larger than the sum of its proper divisors (16489839).

144269389 is a wasteful number, since it uses less digits than its factorization.

144269389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16428 (or 16417 counting only the distinct ones).

The product of its digits is 373248, while the sum is 46.

The square root of 144269389 is about 12011.2192969740. The cubic root of 144269389 is about 524.4749265777.

The spelling of 144269389 in words is "one hundred forty-four million, two hundred sixty-nine thousand, three hundred eighty-nine".