144235439 has 2 divisors, whose sum is σ = 144235440. Its totient is φ = 144235438.

The previous prime is 144235423. The next prime is 144235453. The reversal of 144235439 is 934532441.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 144235439 - 2⁴ = 144235423 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 144235399 and 144235408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144235489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72117719 + 72117720.

It is an arithmetic number, because the mean of its divisors is an integer number (72117720).

Almost surely, 2^144235439 is an apocalyptic number.

144235439 is a deficient number, since it is larger than the sum of its proper divisors (1).

144235439 is an equidigital number, since it uses as much as digits as its factorization.

144235439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 35.

The square root of 144235439 is about 12009.8059518046. The cubic root of 144235439 is about 524.4337828979.

The spelling of 144235439 in words is "one hundred forty-four million, two hundred thirty-five thousand, four hundred thirty-nine".