3947287366 has 32 divisors (see below), whose sum is σ = 6518071296. Its totient is φ = 1777944000.

The previous prime is 3947287343. The next prime is 3947287397. The reversal of 3947287366 is 6637827493.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1179091 + ... + 1182433.

It is an arithmetic number, because the mean of its divisors is an integer number (203689728).

Almost surely, 2^3947287366 is an apocalyptic number.

3947287366 is a deficient number, since it is larger than the sum of its proper divisors (2570783930).

3947287366 is a wasteful number, since it uses less digits than its factorization.

3947287366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3828.

The product of its digits is 9144576, while the sum is 55.

The square root of 3947287366 is about 62827.4411861569. The cubic root of 3947287366 is about 1580.3971877055.

The spelling of 3947287366 in words is "three billion, nine hundred forty-seven million, two hundred eighty-seven thousand, three hundred sixty-six".