144579389 has 4 divisors (see below), whose sum is σ = 147307356. Its totient is φ = 141851424.

The previous prime is 144579377. The next prime is 144579397. The reversal of 144579389 is 983975441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 983975441 = 41 ⋅23999401.

It can be written as a sum of positive squares in 2 ways, for example, as 89151364 + 55428025 = 9442^2 + 7445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144579389 is a prime.

It is a super-2 number, since 2×144579389² = 41806399447226642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144579289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1363904 + ... + 1364009.

It is an arithmetic number, because the mean of its divisors is an integer number (36826839).

Almost surely, 2^144579389 is an apocalyptic number.

It is an amenable number.

144579389 is a deficient number, since it is larger than the sum of its proper divisors (2727967).

144579389 is an equidigital number, since it uses as much as digits as its factorization.

144579389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2727966.

The product of its digits is 1088640, while the sum is 50.

The square root of 144579389 is about 12024.1169738156. The cubic root of 144579389 is about 524.8503143936.

The spelling of 144579389 in words is "one hundred forty-four million, five hundred seventy-nine thousand, three hundred eighty-nine".