1444742717 has 4 divisors (see below), whose sum is σ = 1576082976. Its totient is φ = 1313402460.

The previous prime is 1444742713. The next prime is 1444742749. The reversal of 1444742717 is 7172474441.

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 1444742717 - 2² = 1444742713 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 (1444742713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65670113 + ... + 65670134.

It is an arithmetic number, because the mean of its divisors is an integer number (394020744).

Almost surely, 2^1444742717 is an apocalyptic number.

It is an amenable number.

1444742717 is a deficient number, since it is larger than the sum of its proper divisors (131340259).

1444742717 is a wasteful number, since it uses less digits than its factorization.

1444742717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131340258.

The product of its digits is 175616, while the sum is 41.

The square root of 1444742717 is about 38009.7713358026. The cubic root of 1444742717 is about 1130.4816170832.

The spelling of 1444742717 in words is "one billion, four hundred forty-four million, seven hundred forty-two thousand, seven hundred seventeen".