744816449 has 4 divisors (see below), whose sum is σ = 802110036. Its totient is φ = 687522864.

The previous prime is 744816433. The next prime is 744816481. The reversal of 744816449 is 944618447.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 944618447 = 17 ⋅55565791.

It can be written as a sum of positive squares in 2 ways, for example, as 450076225 + 294740224 = 21215^2 + 17168^2 .

It is a cyclic number.

It is not a de Polignac number, because 744816449 - 2⁴ = 744816433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (744816419) 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, 28646774 + ... + 28646799.

It is an arithmetic number, because the mean of its divisors is an integer number (200527509).

Almost surely, 2^744816449 is an apocalyptic number.

It is an amenable number.

744816449 is a deficient number, since it is larger than the sum of its proper divisors (57293587).

744816449 is a wasteful number, since it uses less digits than its factorization.

744816449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57293586.

The product of its digits is 774144, while the sum is 47.

The square root of 744816449 is about 27291.3255266211. The cubic root of 744816449 is about 906.4623140195.

The spelling of 744816449 in words is "seven hundred forty-four million, eight hundred sixteen thousand, four hundred forty-nine".