144740447 has 2 divisors, whose sum is σ = 144740448. Its totient is φ = 144740446.

The previous prime is 144740443. The next prime is 144740467. The reversal of 144740447 is 744047441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144740447 - 2² = 144740443 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144740443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72370223 + 72370224.

It is an arithmetic number, because the mean of its divisors is an integer number (72370224).

Almost surely, 2^144740447 is an apocalyptic number.

144740447 is a deficient number, since it is larger than the sum of its proper divisors (1).

144740447 is an equidigital number, since it uses as much as digits as its factorization.

144740447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50176, while the sum is 35.

The square root of 144740447 is about 12030.8123998340. The cubic root of 144740447 is about 525.0451323256.

Adding to 144740447 its reverse (744047441), we get a palindrome (888787888).

The spelling of 144740447 in words is "one hundred forty-four million, seven hundred forty thousand, four hundred forty-seven".