1444743121 has 2 divisors, whose sum is σ = 1444743122. Its totient is φ = 1444743120.

The previous prime is 1444743031. The next prime is 1444743143. The reversal of 1444743121 is 1213474441.

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., 1416769600 + 27973521 = 37640^2 + 5289^2 .

It is an emirp because it is prime and its reverse (1213474441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1444743121 - 2¹⁷ = 1444612049 is a prime.

It is not a weakly prime, because it can be changed into another prime (1444743151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722371560 + 722371561.

It is an arithmetic number, because the mean of its divisors is an integer number (722371561).

Almost surely, 2^1444743121 is an apocalyptic number.

It is an amenable number.

1444743121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444743121 is an equidigital number, since it uses as much as digits as its factorization.

1444743121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 31.

The square root of 1444743121 is about 38009.7766502251. The cubic root of 1444743121 is about 1130.4817224571.

The spelling of 1444743121 in words is "one billion, four hundred forty-four million, seven hundred forty-three thousand, one hundred twenty-one".