144889369 has 3 divisors (see below), whose sum is σ = 144901407. Its totient is φ = 144877332.

The previous prime is 144889361. The next prime is 144889387. The reversal of 144889369 is 963988441.

It is a happy number.

The square root of 144889369 is 12037.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1177225 + 143712144 = 1085^2 + 11988^2 .

It is not a de Polignac number, because 144889369 - 2³ = 144889361 is a prime.

It is a super-2 number, since 2×144889369² = 41985858498436322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144889361) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 6019 + ... + 18055.

It is an arithmetic number, because the mean of its divisors is an integer number (48300469).

Almost surely, 2^144889369 is an apocalyptic number.

144889369 is the 12037-th square number.

144889369 is the 6019-th centered octagonal number.

It is an amenable number.

144889369 is a deficient number, since it is larger than the sum of its proper divisors (12038).

144889369 is an frugal number, since it uses more digits than its factorization.

144889369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24074 (or 12037 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 52.

The cubic root of 144889369 is about 525.2251418336.

The spelling of 144889369 in words is "one hundred forty-four million, eight hundred eighty-nine thousand, three hundred sixty-nine".