1442447009 has 2 divisors, whose sum is σ = 1442447010. Its totient is φ = 1442447008.

The previous prime is 1442446981. The next prime is 1442447011. The reversal of 1442447009 is 9007442441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1376187409 + 66259600 = 37097^2 + 8140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1442447009 is a prime.

Together with 1442447011, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1442447009.

It is not a weakly prime, because it can be changed into another prime (1442447509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721223504 + 721223505.

It is an arithmetic number, because the mean of its divisors is an integer number (721223505).

Almost surely, 2^1442447009 is an apocalyptic number.

It is an amenable number.

1442447009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442447009 is an equidigital number, since it uses as much as digits as its factorization.

1442447009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 1442447009 is about 37979.5604108315. The cubic root of 1442447009 is about 1129.8825181332.

The spelling of 1442447009 in words is "one billion, four hundred forty-two million, four hundred forty-seven thousand, nine".