144227477 has 2 divisors, whose sum is σ = 144227478. Its totient is φ = 144227476.

The previous prime is 144227471. The next prime is 144227491. The reversal of 144227477 is 774722441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131079601 + 13147876 = 11449^2 + 3626^2 .

It is a cyclic number.

It is not a de Polignac number, because 144227477 - 2²⁴ = 127450261 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144227477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144227471) 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, 72113738 + 72113739.

It is an arithmetic number, because the mean of its divisors is an integer number (72113739).

Almost surely, 2^144227477 is an apocalyptic number.

It is an amenable number.

144227477 is a deficient number, since it is larger than the sum of its proper divisors (1).

144227477 is an equidigital number, since it uses as much as digits as its factorization.

144227477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87808, while the sum is 38.

The square root of 144227477 is about 12009.4744681023. The cubic root of 144227477 is about 524.4241328917.

The spelling of 144227477 in words is "one hundred forty-four million, two hundred twenty-seven thousand, four hundred seventy-seven".