3866967887 has 4 divisors (see below), whose sum is σ = 3869950656. Its totient is φ = 3863985120.

The previous prime is 3866967833. The next prime is 3866967947. The reversal of 3866967887 is 7887696683.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3866967887 - 2⁸ = 3866967631 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 (3866967787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1489439 + ... + 1492032.

It is an arithmetic number, because the mean of its divisors is an integer number (967487664).

Almost surely, 2^3866967887 is an apocalyptic number.

3866967887 is a deficient number, since it is larger than the sum of its proper divisors (2982769).

3866967887 is a wasteful number, since it uses less digits than its factorization.

3866967887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2982768.

The product of its digits is 146313216, while the sum is 68.

The square root of 3866967887 is about 62184.9490391365. The cubic root of 3866967887 is about 1569.6043314393.

The spelling of 3866967887 in words is "three billion, eight hundred sixty-six million, nine hundred sixty-seven thousand, eight hundred eighty-seven".