744807121 has 4 divisors (see below), whose sum is σ = 750671872. Its totient is φ = 738942372.

The previous prime is 744807113. The next prime is 744807127. The reversal of 744807121 is 121708447.

744807121 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 744807121 - 2³ = 744807113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (744807127) 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, 2932185 + ... + 2932438.

It is an arithmetic number, because the mean of its divisors is an integer number (187667968).

Almost surely, 2^744807121 is an apocalyptic number.

It is an amenable number.

744807121 is a deficient number, since it is larger than the sum of its proper divisors (5864751).

744807121 is a wasteful number, since it uses less digits than its factorization.

744807121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5864750.

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 744807121 is about 27291.1546292934. The cubic root of 744807121 is about 906.4585298586.

The spelling of 744807121 in words is "seven hundred forty-four million, eight hundred seven thousand, one hundred twenty-one".