144572389 has 8 divisors (see below), whose sum is σ = 157299800. Its totient is φ = 132074496.

The previous prime is 144572381. The next prime is 144572413. The reversal of 144572389 is 983275441.

It can be written as a sum of positive squares in 4 ways, for example, as 980100 + 143592289 = 990^2 + 11983^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144572389 - 2³ = 144572381 is a prime.

It is a super-2 number, since 2×144572389² = 41802351322334642, 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 (144572381) 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 in 7 ways as a sum of consecutive naturals, for example, 56064 + ... + 58585.

It is an arithmetic number, because the mean of its divisors is an integer number (19662475).

Almost surely, 2^144572389 is an apocalyptic number.

It is an amenable number.

144572389 is a deficient number, since it is larger than the sum of its proper divisors (12727411).

144572389 is a wasteful number, since it uses less digits than its factorization.

144572389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114759.

The product of its digits is 241920, while the sum is 43.

The square root of 144572389 is about 12023.8258886263. The cubic root of 144572389 is about 524.8418438191.

The spelling of 144572389 in words is "one hundred forty-four million, five hundred seventy-two thousand, three hundred eighty-nine".