1444797709 has 4 divisors (see below), whose sum is σ = 1445171040. Its totient is φ = 1444424380.

The previous prime is 1444797707. The next prime is 1444797713. The reversal of 1444797709 is 9077974441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1444797709 - 2¹ = 1444797707 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 (1444797703) 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 in 3 ways as a sum of consecutive naturals, for example, 180799 + ... + 188620.

It is an arithmetic number, because the mean of its divisors is an integer number (361292760).

Almost surely, 2^1444797709 is an apocalyptic number.

It is an amenable number.

1444797709 is a deficient number, since it is larger than the sum of its proper divisors (373331).

1444797709 is an equidigital number, since it uses as much as digits as its factorization.

1444797709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373330.

The product of its (nonzero) digits is 1778112, while the sum is 52.

The square root of 1444797709 is about 38010.4947218528. The cubic root of 1444797709 is about 1130.4959602729.

The spelling of 1444797709 in words is "one billion, four hundred forty-four million, seven hundred ninety-seven thousand, seven hundred nine".