144005539 has 2 divisors, whose sum is σ = 144005540. Its totient is φ = 144005538.

The previous prime is 144005531. The next prime is 144005551. The reversal of 144005539 is 935500441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144005539 - 2³ = 144005531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144005539.

It is not a weakly prime, because it can be changed into another prime (144005531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72002769 + 72002770.

It is an arithmetic number, because the mean of its divisors is an integer number (72002770).

Almost surely, 2^144005539 is an apocalyptic number.

144005539 is a deficient number, since it is larger than the sum of its proper divisors (1).

144005539 is an equidigital number, since it uses as much as digits as its factorization.

144005539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 144005539 is about 12000.2307894473. The cubic root of 144005539 is about 524.1549992587.

The spelling of 144005539 in words is "one hundred forty-four million, five thousand, five hundred thirty-nine".