744384151729 has 3 divisors (see below), whose sum is σ = 744385014507. Its totient is φ = 744383288952.

The previous prime is 744384151723. The next prime is 744384151811. The reversal of 744384151729 is 927151483447.

It is a happy number.

The square root of 744384151729 is 862777.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 397170946225 + 347213205504 = 630215^2 + 589248^2 .

It is not a de Polignac number, because 744384151729 - 2¹⁷ = 744384020657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 744384151729.

It is not an unprimeable number, because it can be changed into a prime (744384151723) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 431389 + ... + 1294165.

It is an arithmetic number, because the mean of its divisors is an integer number (248128338169).

Almost surely, 2^744384151729 is an apocalyptic number.

744384151729 is the 862777-th square number.

744384151729 is the 431389-th centered octagonal number.

It is an amenable number.

744384151729 is a deficient number, since it is larger than the sum of its proper divisors (862778).

744384151729 is an frugal number, since it uses more digits than its factorization.

744384151729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725554 (or 862777 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 55.

The spelling of 744384151729 in words is "seven hundred forty-four billion, three hundred eighty-four million, one hundred fifty-one thousand, seven hundred twenty-nine".