744727397 has 4 divisors (see below), whose sum is σ = 744974700. Its totient is φ = 744480096.

The previous prime is 744727393. The next prime is 744727411. The reversal of 744727397 is 793727447.

744727397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 72829156 + 671898241 = 8534^2 + 25921^2 .

It is a cyclic number.

It is not a de Polignac number, because 744727397 - 2² = 744727393 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 (744727393) 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, 119078 + ... + 125175.

It is an arithmetic number, because the mean of its divisors is an integer number (186243675).

Almost surely, 2^744727397 is an apocalyptic number.

It is an amenable number.

744727397 is a deficient number, since it is larger than the sum of its proper divisors (247303).

744727397 is a wasteful number, since it uses less digits than its factorization.

744727397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247302.

The product of its digits is 2074464, while the sum is 50.

The square root of 744727397 is about 27289.6939704351. The cubic root of 744727397 is about 906.4261863268.

Adding to 744727397 its sum of digits (50), we get a palindrome (744727447).

Subtracting 744727397 from its reverse (793727447), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 744727397 in words is "seven hundred forty-four million, seven hundred twenty-seven thousand, three hundred ninety-seven".