144492749 has 2 divisors, whose sum is σ = 144492750. Its totient is φ = 144492748.

The previous prime is 144492737. The next prime is 144492757. The reversal of 144492749 is 947294441.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84971524 + 59521225 = 9218^2 + 7715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144492749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144492709) 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, 72246374 + 72246375.

It is an arithmetic number, because the mean of its divisors is an integer number (72246375).

Almost surely, 2^144492749 is an apocalyptic number.

It is an amenable number.

144492749 is a deficient number, since it is larger than the sum of its proper divisors (1).

144492749 is an equidigital number, since it uses as much as digits as its factorization.

144492749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 44.

The square root of 144492749 is about 12020.5136745482. The cubic root of 144492749 is about 524.7454536250.

The spelling of 144492749 in words is "one hundred forty-four million, four hundred ninety-two thousand, seven hundred forty-nine".