8476666749 has 12 divisors (see below), whose sum is σ = 12370303036. Its totient is φ = 5592851712.

The previous prime is 8476666747. The next prime is 8476666771. The reversal of 8476666749 is 9476666748.

It can be written as a sum of positive squares in 2 ways, for example, as 6788936025 + 1687730724 = 82395^2 + 41082^2 .

It is not a de Polignac number, because 8476666749 - 2¹ = 8476666747 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8476666747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4854034 + ... + 4855779.

Almost surely, 2^8476666749 is an apocalyptic number.

It is an amenable number.

8476666749 is a deficient number, since it is larger than the sum of its proper divisors (3893636287).

8476666749 is a wasteful number, since it uses less digits than its factorization.

8476666749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9709916 (or 9709913 counting only the distinct ones).

The product of its digits is 73156608, while the sum is 63.

The square root of 8476666749 is about 92068.8152905206. The cubic root of 8476666749 is about 2038.9584222926.

Subtracting 8476666749 from its reverse (9476666748), we obtain a palindrome (999999999).

The spelling of 8476666749 in words is "eight billion, four hundred seventy-six million, six hundred sixty-six thousand, seven hundred forty-nine".