744747273 has 6 divisors (see below), whose sum is σ = 1075746074. Its totient is φ = 496498176.

The previous prime is 744747239. The next prime is 744747281. The reversal of 744747273 is 372747447.

744747273 is a `hidden beast` number, since 74 + 47 + 472 + 73 = 666.

It can be written as a sum of positive squares in only one way, i.e., 734843664 + 9903609 = 27108^2 + 3147^2 .

It is not a de Polignac number, because 744747273 - 2⁶ = 744747209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (744747233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41374840 + ... + 41374857.

Almost surely, 2^744747273 is an apocalyptic number.

It is an amenable number.

744747273 is a deficient number, since it is larger than the sum of its proper divisors (330998801).

744747273 is a wasteful number, since it uses less digits than its factorization.

744747273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82749703 (or 82749700 counting only the distinct ones).

The product of its digits is 921984, while the sum is 45.

The square root of 744747273 is about 27290.0581347860. The cubic root of 744747273 is about 906.4342501126.

The spelling of 744747273 in words is "seven hundred forty-four million, seven hundred forty-seven thousand, two hundred seventy-three".