744747447 has 4 divisors (see below), whose sum is σ = 992996600. Its totient is φ = 496498296.

The previous prime is 744747439. The next prime is 744747449.

744747447 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 744747447 - 2³ = 744747439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 744747396 and 744747405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744747449) 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, 124124572 + ... + 124124577.

It is an arithmetic number, because the mean of its divisors is an integer number (248249150).

Almost surely, 2^744747447 is an apocalyptic number.

744747447 is a deficient number, since it is larger than the sum of its proper divisors (248249153).

744747447 is a wasteful number, since it uses less digits than its factorization.

744747447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248249152.

The product of its digits is 2458624, while the sum is 48.

The square root of 744747447 is about 27290.0613227600. The cubic root of 744747447 is about 906.4343207046.

The spelling of 744747447 in words is "seven hundred forty-four million, seven hundred forty-seven thousand, four hundred forty-seven".