9994224681 has 36 divisors (see below), whose sum is σ = 17109906372. Its totient is φ = 5603217984.

The previous prime is 9994224677. The next prime is 9994224749. The reversal of 9994224681 is 1864224999.

9994224681 is a `hidden beast` number, since 99 + 94 + 2 + 2 + 468 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7070119056 + 2924105625 = 84084^2 + 54075^2 .

It is not a de Polignac number, because 9994224681 - 2² = 9994224677 is a prime.

It is a super-2 number, since 2×9994224681² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9994224601) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 190426 + ... + 237171.

It is an arithmetic number, because the mean of its divisors is an integer number (475275177).

Almost surely, 2^9994224681 is an apocalyptic number.

It is an amenable number.

9994224681 is a deficient number, since it is larger than the sum of its proper divisors (7115681691).

9994224681 is a wasteful number, since it uses less digits than its factorization.

9994224681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427670 (or 427660 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 9994224681 is about 99971.1192345069. The cubic root of 9994224681 is about 2154.0198585755.

The spelling of 9994224681 in words is "nine billion, nine hundred ninety-four million, two hundred twenty-four thousand, six hundred eighty-one".