1009444841 has 4 divisors (see below), whose sum is σ = 1036727172. Its totient is φ = 982162512.

The previous prime is 1009444831. The next prime is 1009444859. The reversal of 1009444841 is 1484449001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1484449001 = 7 ⋅212064143.

It can be written as a sum of positive squares in 2 ways, for example, as 907515625 + 101929216 = 30125^2 + 10096^2 .

It is a cyclic number.

It is not a de Polignac number, because 1009444841 - 2¹⁴ = 1009428457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1009444811) 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, 13641110 + ... + 13641183.

It is an arithmetic number, because the mean of its divisors is an integer number (259181793).

Almost surely, 2^1009444841 is an apocalyptic number.

It is an amenable number.

1009444841 is a deficient number, since it is larger than the sum of its proper divisors (27282331).

1009444841 is an equidigital number, since it uses as much as digits as its factorization.

1009444841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27282330.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 1009444841 is about 31771.7616917917. The cubic root of 1009444841 is about 1003.1384203469.

The spelling of 1009444841 in words is "one billion, nine million, four hundred forty-four thousand, eight hundred forty-one".