7944194844 has 36 divisors (see below), whose sum is σ = 20089139616. Its totient is φ = 2647012608.

The previous prime is 7944194827. The next prime is 7944194873. The reversal of 7944194844 is 4484914497.

It is a happy number.

7944194844 is a `hidden beast` number, since 79 + 441 + 94 + 8 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×7944194844² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50797 + ... + 135899.

It is an arithmetic number, because the mean of its divisors is an integer number (558031656).

Almost surely, 2^7944194844 is an apocalyptic number.

It is an amenable number.

7944194844 is an abundant number, since it is smaller than the sum of its proper divisors (12144944772).

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

7944194844 is a wasteful number, since it uses less digits than its factorization.

7944194844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87706 (or 87701 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The square root of 7944194844 is about 89130.2128573695. The cubic root of 7944194844 is about 1995.3387149842.

The spelling of 7944194844 in words is "seven billion, nine hundred forty-four million, one hundred ninety-four thousand, eight hundred forty-four".