144281939 has 2 divisors, whose sum is σ = 144281940. Its totient is φ = 144281938.

The previous prime is 144281933. The next prime is 144281947. The reversal of 144281939 is 939182441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144281939 - 2¹² = 144277843 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 144281896 and 144281905.

It is not a weakly prime, because it can be changed into another prime (144281933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72140969 + 72140970.

It is an arithmetic number, because the mean of its divisors is an integer number (72140970).

Almost surely, 2^144281939 is an apocalyptic number.

144281939 is a deficient number, since it is larger than the sum of its proper divisors (1).

144281939 is an equidigital number, since it uses as much as digits as its factorization.

144281939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 41.

The square root of 144281939 is about 12011.7417138398. The cubic root of 144281939 is about 524.4901341685.

The spelling of 144281939 in words is "one hundred forty-four million, two hundred eighty-one thousand, nine hundred thirty-nine".