8739946665 has 12 divisors (see below), whose sum is σ = 15149240964. Its totient is φ = 4661304864.

The previous prime is 8739946637. The next prime is 8739946703. The reversal of 8739946665 is 5666499378.

It can be written as a sum of positive squares in 2 ways, for example, as 6202507536 + 2537439129 = 78756^2 + 50373^2 .

It is not a de Polignac number, because 8739946665 - 2⁹ = 8739946153 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97110474 + ... + 97110563.

It is an arithmetic number, because the mean of its divisors is an integer number (1262436747).

Almost surely, 2^8739946665 is an apocalyptic number.

It is an amenable number.

8739946665 is a deficient number, since it is larger than the sum of its proper divisors (6409294299).

8739946665 is a wasteful number, since it uses less digits than its factorization.

8739946665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194221048 (or 194221045 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 63.

The square root of 8739946665 is about 93487.6818891131. The cubic root of 8739946665 is about 2059.8531539054.

The spelling of 8739946665 in words is "eight billion, seven hundred thirty-nine million, nine hundred forty-six thousand, six hundred sixty-five".