144235639 has 2 divisors, whose sum is σ = 144235640. Its totient is φ = 144235638.

The previous prime is 144235613. The next prime is 144235643. The reversal of 144235639 is 936532441.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 144235639 - 2⁵ = 144235607 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144235598 and 144235607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144235699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72117819 + 72117820.

It is an arithmetic number, because the mean of its divisors is an integer number (72117820).

Almost surely, 2^144235639 is an apocalyptic number.

144235639 is a deficient number, since it is larger than the sum of its proper divisors (1).

144235639 is an equidigital number, since it uses as much as digits as its factorization.

144235639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 37.

The square root of 144235639 is about 12009.8142783309. The cubic root of 144235639 is about 524.4340252949.

The spelling of 144235639 in words is "one hundred forty-four million, two hundred thirty-five thousand, six hundred thirty-nine".