8889663961 has 8 divisors (see below), whose sum is σ = 8917534080. Its totient is φ = 8861832528.

The previous prime is 8889663947. The next prime is 8889663971. The reversal of 8889663961 is 1693669888.

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

It is a cyclic number.

It is not a de Polignac number, because 8889663961 - 2⁵ = 8889663929 is a prime.

It is a super-2 number, since 2×8889663961² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8889663893 and 8889663902.

It is not an unprimeable number, because it can be changed into a prime (8889663901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490320 + ... + 508126.

It is an arithmetic number, because the mean of its divisors is an integer number (1114691760).

Almost surely, 2^8889663961 is an apocalyptic number.

It is an amenable number.

8889663961 is a deficient number, since it is larger than the sum of its proper divisors (27870119).

8889663961 is a wasteful number, since it uses less digits than its factorization.

8889663961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19343.

The product of its digits is 26873856, while the sum is 64.

The square root of 8889663961 is about 94285.0145091997. The cubic root of 8889663961 is about 2071.5485437841.

The spelling of 8889663961 in words is "eight billion, eight hundred eighty-nine million, six hundred sixty-three thousand, nine hundred sixty-one".