744822321 has 16 divisors (see below), whose sum is σ = 1020976704. Its totient is φ = 482635584.

The previous prime is 744822311. The next prime is 744822347. The reversal of 744822321 is 123228447.

It is a happy number.

It is not a de Polignac number, because 744822321 - 2⁵ = 744822289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (744822311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128931 + ... + 134583.

It is an arithmetic number, because the mean of its divisors is an integer number (63811044).

Almost surely, 2^744822321 is an apocalyptic number.

It is an amenable number.

744822321 is a deficient number, since it is larger than the sum of its proper divisors (276154383).

744822321 is a wasteful number, since it uses less digits than its factorization.

744822321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6880.

The product of its digits is 21504, while the sum is 33.

The square root of 744822321 is about 27291.4331063797. The cubic root of 744822321 is about 906.4646961423.

The spelling of 744822321 in words is "seven hundred forty-four million, eight hundred twenty-two thousand, three hundred twenty-one".