844234668 has 72 divisors (see below), whose sum is σ = 2181540816. Its totient is φ = 275184000.

The previous prime is 844234667. The next prime is 844234669. The reversal of 844234668 is 866432448.

It is an interprime number because it is at equal distance from previous prime (844234667) and next prime (844234669).

It is not an unprimeable number, because it can be changed into a prime (844234667) 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, 802743 + ... + 803793.

It is an arithmetic number, because the mean of its divisors is an integer number (30299178).

Almost surely, 2^844234668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 844234668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1090770408).

844234668 is an abundant number, since it is smaller than the sum of its proper divisors (1337306148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

844234668 is a wasteful number, since it uses less digits than its factorization.

844234668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535 (or 1530 counting only the distinct ones).

The product of its digits is 884736, while the sum is 45.

The square root of 844234668 is about 29055.7166148075. The cubic root of 844234668 is about 945.1216841709.

The spelling of 844234668 in words is "eight hundred forty-four million, two hundred thirty-four thousand, six hundred sixty-eight".