144923439 has 4 divisors (see below), whose sum is σ = 193231256. Its totient is φ = 96615624.

The previous prime is 144923423. The next prime is 144923447. The reversal of 144923439 is 934329441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 934329441 = 3 ⋅311443147.

It is not a de Polignac number, because 144923439 - 2⁴ = 144923423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144923397 and 144923406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144923489) 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, 24153904 + ... + 24153909.

It is an arithmetic number, because the mean of its divisors is an integer number (48307814).

Almost surely, 2^144923439 is an apocalyptic number.

144923439 is a deficient number, since it is larger than the sum of its proper divisors (48307817).

144923439 is an equidigital number, since it uses as much as digits as its factorization.

144923439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48307816.

The product of its digits is 93312, while the sum is 39.

The square root of 144923439 is about 12038.4151365535. The cubic root of 144923439 is about 525.2663066163.

The spelling of 144923439 in words is "one hundred forty-four million, nine hundred twenty-three thousand, four hundred thirty-nine".