1344228749 has 2 divisors, whose sum is σ = 1344228750. Its totient is φ = 1344228748.

The previous prime is 1344228733. The next prime is 1344228751. The reversal of 1344228749 is 9478224431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1132322500 + 211906249 = 33650^2 + 14557^2 .

It is a cyclic number.

It is not a de Polignac number, because 1344228749 - 2⁴ = 1344228733 is a prime.

Together with 1344228751, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1344228799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672114374 + 672114375.

It is an arithmetic number, because the mean of its divisors is an integer number (672114375).

Almost surely, 2^1344228749 is an apocalyptic number.

It is an amenable number.

1344228749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344228749 is an equidigital number, since it uses as much as digits as its factorization.

1344228749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 44.

The square root of 1344228749 is about 36663.7252471704. The cubic root of 1344228749 is about 1103.6322762415.

The spelling of 1344228749 in words is "one billion, three hundred forty-four million, two hundred twenty-eight thousand, seven hundred forty-nine".