844097913 has 24 divisors (see below), whose sum is σ = 1240012800. Its totient is φ = 553197120.

The previous prime is 844097897. The next prime is 844097927. The reversal of 844097913 is 319790448.

It is not a de Polignac number, because 844097913 - 2⁴ = 844097897 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (844090913) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 243013 + ... + 246461.

It is an arithmetic number, because the mean of its divisors is an integer number (51667200).

Almost surely, 2^844097913 is an apocalyptic number.

It is an amenable number.

844097913 is a deficient number, since it is larger than the sum of its proper divisors (395914887).

844097913 is a wasteful number, since it uses less digits than its factorization.

844097913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909 (or 3906 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 844097913 is about 29053.3631960226. The cubic root of 844097913 is about 945.0706489551.

The spelling of 844097913 in words is "eight hundred forty-four million, ninety-seven thousand, nine hundred thirteen".