744989447 has 4 divisors (see below), whose sum is σ = 745111080. Its totient is φ = 744867816.

The previous prime is 744989437. The next prime is 744989467.

744989447 is nontrivially palindromic in base 10.

744989447 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 is a cyclic number.

It is not a de Polignac number, because 744989447 - 2⁴ = 744989431 is a prime.

It is a super-2 number, since 2×744989447² = 1110018552282731618, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 744989392 and 744989401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744989437) 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, 51113 + ... + 64050.

It is an arithmetic number, because the mean of its divisors is an integer number (186277770).

Almost surely, 2^744989447 is an apocalyptic number.

744989447 is a deficient number, since it is larger than the sum of its proper divisors (121633).

744989447 is a wasteful number, since it uses less digits than its factorization.

744989447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121632.

The product of its digits is 8128512, while the sum is 56.

The square root of 744989447 is about 27294.4948112252. The cubic root of 744989447 is about 906.5324897109.

The spelling of 744989447 in words is "seven hundred forty-four million, nine hundred eighty-nine thousand, four hundred forty-seven".