8889663946 has 8 divisors (see below), whose sum is σ = 13431828420. Its totient is φ = 4412387808.

The previous prime is 8889663941. The next prime is 8889663947. The reversal of 8889663946 is 6493669888.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7984316025 + 905347921 = 89355^2 + 30089^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×8889663946² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8889663941) 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, 16221741 + ... + 16222288.

Almost surely, 2^8889663946 is an apocalyptic number.

8889663946 is a deficient number, since it is larger than the sum of its proper divisors (4542164474).

8889663946 is a wasteful number, since it uses less digits than its factorization.

8889663946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32444168.

The product of its digits is 107495424, while the sum is 67.

The square root of 8889663946 is about 94285.0144296537. The cubic root of 8889663946 is about 2071.5485426190.

The spelling of 8889663946 in words is "eight billion, eight hundred eighty-nine million, six hundred sixty-three thousand, nine hundred forty-six".