144144491 has 2 divisors, whose sum is σ = 144144492. Its totient is φ = 144144490.

The previous prime is 144144487. The next prime is 144144499. The reversal of 144144491 is 194441441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144144491 - 2² = 144144487 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (144144499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72072245 + 72072246.

It is an arithmetic number, because the mean of its divisors is an integer number (72072246).

Almost surely, 2^144144491 is an apocalyptic number.

144144491 is a deficient number, since it is larger than the sum of its proper divisors (1).

144144491 is an equidigital number, since it uses as much as digits as its factorization.

144144491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 32.

The square root of 144144491 is about 12006.0189488440. The cubic root of 144144491 is about 524.3235320642.

The spelling of 144144491 in words is "one hundred forty-four million, one hundred forty-four thousand, four hundred ninety-one".