1440807073 has 2 divisors, whose sum is σ = 1440807074. Its totient is φ = 1440807072.

The previous prime is 1440807023. The next prime is 1440807079. The reversal of 1440807073 is 3707080441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1046069649 + 394737424 = 32343^2 + 19868^2 .

It is an emirp because it is prime and its reverse (3707080441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1440807073 - 2¹³ = 1440798881 is a prime.

It is not a weakly prime, because it can be changed into another prime (1440807079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720403536 + 720403537.

It is an arithmetic number, because the mean of its divisors is an integer number (720403537).

Almost surely, 2^1440807073 is an apocalyptic number.

It is an amenable number.

1440807073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440807073 is an equidigital number, since it uses as much as digits as its factorization.

1440807073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 1440807073 is about 37957.9645529104. The cubic root of 1440807073 is about 1129.4541632479.

The spelling of 1440807073 in words is "one billion, four hundred forty million, eight hundred seven thousand, seventy-three".