144589391 has 2 divisors, whose sum is σ = 144589392. Its totient is φ = 144589390.

The previous prime is 144589387. The next prime is 144589397. The reversal of 144589391 is 193985441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144589391 - 2² = 144589387 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144589397) 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, 72294695 + 72294696.

It is an arithmetic number, because the mean of its divisors is an integer number (72294696).

Almost surely, 2^144589391 is an apocalyptic number.

144589391 is a deficient number, since it is larger than the sum of its proper divisors (1).

144589391 is an equidigital number, since it uses as much as digits as its factorization.

144589391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 44.

The square root of 144589391 is about 12024.5328807401. The cubic root of 144589391 is about 524.8624171602.

The spelling of 144589391 in words is "one hundred forty-four million, five hundred eighty-nine thousand, three hundred ninety-one".