144534439 has 4 divisors (see below), whose sum is σ = 165182224. Its totient is φ = 123886656.

The previous prime is 144534421. The next prime is 144534443. The reversal of 144534439 is 934435441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 934435441 = 1553 ⋅601697.

It is a cyclic number.

It is not a de Polignac number, because 144534439 - 2⁹ = 144533927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144534398 and 144534407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144534409) 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, 10323882 + ... + 10323895.

It is an arithmetic number, because the mean of its divisors is an integer number (41295556).

Almost surely, 2^144534439 is an apocalyptic number.

144534439 is a deficient number, since it is larger than the sum of its proper divisors (20647785).

144534439 is an equidigital number, since it uses as much as digits as its factorization.

144534439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20647784.

The product of its digits is 103680, while the sum is 37.

The square root of 144534439 is about 12022.2476683855. The cubic root of 144534439 is about 524.7959164440.

The spelling of 144534439 in words is "one hundred forty-four million, five hundred thirty-four thousand, four hundred thirty-nine".