844380313 has 8 divisors (see below), whose sum is σ = 965188800. Its totient is φ = 723617520.

The previous prime is 844380307. The next prime is 844380319. The reversal of 844380313 is 313083448.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (844380307) and next prime (844380319).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 844380313 - 2¹³ = 844372121 is a prime.

It is a super-2 number, since 2×844380313² = 1425956225963955938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (844380319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50763 + ... + 65311.

It is an arithmetic number, because the mean of its divisors is an integer number (120648600).

Almost surely, 2^844380313 is an apocalyptic number.

It is an amenable number.

844380313 is a deficient number, since it is larger than the sum of its proper divisors (120808487).

844380313 is a wasteful number, since it uses less digits than its factorization.

844380313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22847.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 844380313 is about 29058.2228121405. Note that the first 3 decimals coincide. The cubic root of 844380313 is about 945.1760309609.

The spelling of 844380313 in words is "eight hundred forty-four million, three hundred eighty thousand, three hundred thirteen".