1444772709 has 12 divisors (see below), whose sum is σ = 2088320416. Its totient is φ = 962523432.

The previous prime is 1444772683. The next prime is 1444772713. The reversal of 1444772709 is 9072774441.

It is not a de Polignac number, because 1444772709 - 2¹¹ = 1444770661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444772759) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40777 + ... + 67470.

Almost surely, 2^1444772709 is an apocalyptic number.

It is an amenable number.

1444772709 is a deficient number, since it is larger than the sum of its proper divisors (643547707).

1444772709 is a wasteful number, since it uses less digits than its factorization.

1444772709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109736 (or 109733 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The square root of 1444772709 is about 38010.1658638844. The cubic root of 1444772709 is about 1130.4894397379.

The spelling of 1444772709 in words is "one billion, four hundred forty-four million, seven hundred seventy-two thousand, seven hundred nine".