844348513 has 4 divisors (see below), whose sum is σ = 844703748. Its totient is φ = 843993280.

The previous prime is 844348499. The next prime is 844348523. The reversal of 844348513 is 315843448.

844348513 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 can be written as a sum of positive squares in 2 ways, for example, as 91833889 + 752514624 = 9583^2 + 27432^2 .

It is a cyclic number.

It is not a de Polignac number, because 844348513 - 2⁵ = 844348481 is a prime.

It is a super-2 number, since 2×844348513² = 1425848822810622338, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (844348523) 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, 174028 + ... + 178813.

It is an arithmetic number, because the mean of its divisors is an integer number (211175937).

Almost surely, 2^844348513 is an apocalyptic number.

It is an amenable number.

844348513 is a deficient number, since it is larger than the sum of its proper divisors (355235).

844348513 is a wasteful number, since it uses less digits than its factorization.

844348513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355234.

The product of its digits is 184320, while the sum is 40.

The square root of 844348513 is about 29057.6756296852. The cubic root of 844348513 is about 945.1641654644.

The spelling of 844348513 in words is "eight hundred forty-four million, three hundred forty-eight thousand, five hundred thirteen".