8646447946 has 8 divisors (see below), whose sum is σ = 12973049604. Its totient is φ = 4322098080.

The previous prime is 8646447923. The next prime is 8646447961. The reversal of 8646447946 is 6497446468.

It can be written as a sum of positive squares in 2 ways, for example, as 8385980625 + 260467321 = 91575^2 + 16139^2 .

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

It is a super-2 number, since 2×8646447946² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553315 + ... + 568726.

Almost surely, 2^8646447946 is an apocalyptic number.

8646447946 is a deficient number, since it is larger than the sum of its proper divisors (4326601658).

8646447946 is a wasteful number, since it uses less digits than its factorization.

8646447946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125896.

The product of its digits is 27869184, while the sum is 58.

The square root of 8646447946 is about 92986.2782672798. The cubic root of 8646447946 is about 2052.4814642935.

The spelling of 8646447946 in words is "eight billion, six hundred forty-six million, four hundred forty-seven thousand, nine hundred forty-six".