1444423009 has 2 divisors, whose sum is σ = 1444423010. Its totient is φ = 1444423008.

The previous prime is 1444422979. The next prime is 1444423031. The reversal of 1444423009 is 9003244441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1376410000 + 68013009 = 37100^2 + 8247^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1444423009 is a prime.

It is a super-3 number, since 3×1444423009³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (1444423609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722211504 + 722211505.

It is an arithmetic number, because the mean of its divisors is an integer number (722211505).

Almost surely, 2^1444423009 is an apocalyptic number.

It is an amenable number.

1444423009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444423009 is an equidigital number, since it uses as much as digits as its factorization.

1444423009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 1444423009 is about 38005.5655003317. The cubic root of 1444423009 is about 1130.3982226085.

The spelling of 1444423009 in words is "one billion, four hundred forty-four million, four hundred twenty-three thousand, nine".