744454438 has 64 divisors (see below), whose sum is σ = 1406805120. Its totient is φ = 287649792.

The previous prime is 744454379. The next prime is 744454441. The reversal of 744454438 is 834454447.

It is a junction number, because it is equal to n+sod(n) for n = 744454394 and 744454403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1819978 + ... + 1820386.

It is an arithmetic number, because the mean of its divisors is an integer number (21981330).

Almost surely, 2^744454438 is an apocalyptic number.

744454438 is a deficient number, since it is larger than the sum of its proper divisors (662350682).

744454438 is a wasteful number, since it uses less digits than its factorization.

744454438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641.

The product of its digits is 860160, while the sum is 43.

The square root of 744454438 is about 27284.6923750296. The cubic root of 744454438 is about 906.3154310713.

Subtracting 744454438 from its reverse (834454447), we obtain a palindrome (90000009).

The spelling of 744454438 in words is "seven hundred forty-four million, four hundred fifty-four thousand, four hundred thirty-eight".