744721559 has 2 divisors, whose sum is σ = 744721560. Its totient is φ = 744721558.

The previous prime is 744721543. The next prime is 744721589. The reversal of 744721559 is 955127447.

744721559 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 744721559 - 2⁴ = 744721543 is a prime.

It is a super-2 number, since 2×744721559² = 1109220400878780962, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (744721529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372360779 + 372360780.

It is an arithmetic number, because the mean of its divisors is an integer number (372360780).

Almost surely, 2^744721559 is an apocalyptic number.

744721559 is a deficient number, since it is larger than the sum of its proper divisors (1).

744721559 is an equidigital number, since it uses as much as digits as its factorization.

744721559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 44.

The square root of 744721559 is about 27289.5870067687. The cubic root of 744721559 is about 906.4238177957.

The spelling of 744721559 in words is "seven hundred forty-four million, seven hundred twenty-one thousand, five hundred fifty-nine".