3931266866 has 8 divisors (see below), whose sum is σ = 5899263744. Its totient is φ = 1964845620.

The previous prime is 3931266853. The next prime is 3931266869. The reversal of 3931266866 is 6686621393.

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

It is not an unprimeable number, because it can be changed into a prime (3931266869) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 387650 + ... + 397661.

It is an arithmetic number, because the mean of its divisors is an integer number (737407968).

Almost surely, 2^3931266866 is an apocalyptic number.

3931266866 is a deficient number, since it is larger than the sum of its proper divisors (1967996878).

3931266866 is a wasteful number, since it uses less digits than its factorization.

3931266866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787816.

The product of its digits is 1679616, while the sum is 50.

The square root of 3931266866 is about 62699.8155180699. The cubic root of 3931266866 is about 1578.2562166859.

The spelling of 3931266866 in words is "three billion, nine hundred thirty-one million, two hundred sixty-six thousand, eight hundred sixty-six".