744705139369 has 9 divisors (see below), whose sum is σ = 750299734807. Its totient is φ = 739151972464.

The previous prime is 744705139331. The next prime is 744705139393. The reversal of 744705139369 is 963931507447.

The square root of 744705139369 is 862963.

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

744705139369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 437443346025 + 307261793344 = 661395^2 + 554312^2 .

It is not a de Polignac number, because 744705139369 - 2³⁵ = 710345401001 is a prime.

It is a super-2 number, since 2×744705139369² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (744700139369) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 118222782 + ... + 118229080.

Almost surely, 2^744705139369 is an apocalyptic number.

744705139369 is the 862963-rd square number.

744705139369 is the 431482-nd centered octagonal number.

It is an amenable number.

744705139369 is a deficient number, since it is larger than the sum of its proper divisors (5594595438).

744705139369 is an frugal number, since it uses more digits than its factorization.

744705139369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12872 (or 6436 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 58.

The spelling of 744705139369 in words is "seven hundred forty-four billion, seven hundred five million, one hundred thirty-nine thousand, three hundred sixty-nine".