844211811 has 4 divisors (see below), whose sum is σ = 1125615752. Its totient is φ = 562807872.

The previous prime is 844211807. The next prime is 844211839. The reversal of 844211811 is 118112448.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 844211811 - 2² = 844211807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (844211861) 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, 140701966 + ... + 140701971.

It is an arithmetic number, because the mean of its divisors is an integer number (281403938).

Almost surely, 2^844211811 is an apocalyptic number.

844211811 is a deficient number, since it is larger than the sum of its proper divisors (281403941).

844211811 is a wasteful number, since it uses less digits than its factorization.

844211811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281403940.

The product of its digits is 2048, while the sum is 30.

The square root of 844211811 is about 29055.3232816295. The cubic root of 844211811 is about 945.1131546147.

The spelling of 844211811 in words is "eight hundred forty-four million, two hundred eleven thousand, eight hundred eleven".