1444346521 has 2 divisors, whose sum is σ = 1444346522. Its totient is φ = 1444346520.

The previous prime is 1444346507. The next prime is 1444346531. The reversal of 1444346521 is 1256434441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 798627600 + 645718921 = 28260^2 + 25411^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444346521 - 2¹⁷ = 1444215449 is a prime.

It is a super-2 number, since 2×1444346521² = 4172273745449606882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1444346531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722173260 + 722173261.

It is an arithmetic number, because the mean of its divisors is an integer number (722173261).

Almost surely, 2^1444346521 is an apocalyptic number.

It is an amenable number.

1444346521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444346521 is an equidigital number, since it uses as much as digits as its factorization.

1444346521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 34.

The square root of 1444346521 is about 38004.5592133365. The cubic root of 1444346521 is about 1130.3782692142.

The spelling of 1444346521 in words is "one billion, four hundred forty-four million, three hundred forty-six thousand, five hundred twenty-one".