144394057 has 2 divisors, whose sum is σ = 144394058. Its totient is φ = 144394056.

The previous prime is 144394037. The next prime is 144394079. The reversal of 144394057 is 750493441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144384256 + 9801 = 12016^2 + 99^2 .

It is a cyclic number.

It is not a de Polignac number, because 144394057 - 2¹⁵ = 144361289 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (144394037) 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, 72197028 + 72197029.

It is an arithmetic number, because the mean of its divisors is an integer number (72197029).

Almost surely, 2^144394057 is an apocalyptic number.

It is an amenable number.

144394057 is a deficient number, since it is larger than the sum of its proper divisors (1).

144394057 is an equidigital number, since it uses as much as digits as its factorization.

144394057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 144394057 is about 12016.4078243042. The cubic root of 144394057 is about 524.6259551865.

It can be divided in two parts, 14439 and 4057, that added together give a square (18496 = 136²).

The spelling of 144394057 in words is "one hundred forty-four million, three hundred ninety-four thousand, fifty-seven".