3888667217 has 8 divisors (see below), whose sum is σ = 4048386600. Its totient is φ = 3730656384.

The previous prime is 3888667207. The next prime is 3888667219. The reversal of 3888667217 is 7127668883.

It is a happy number.

3888667217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 426050881 + 3462616336 = 20641^2 + 58844^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3888667217 - 2⁸ = 3888666961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3888667219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422492 + ... + 431597.

It is an arithmetic number, because the mean of its divisors is an integer number (506048325).

Almost surely, 2^3888667217 is an apocalyptic number.

It is an amenable number.

3888667217 is a deficient number, since it is larger than the sum of its proper divisors (159719383).

3888667217 is a wasteful number, since it uses less digits than its factorization.

3888667217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854275.

The product of its digits is 5419008, while the sum is 56.

The square root of 3888667217 is about 62359.1790917745. The cubic root of 3888667217 is about 1572.5347801053.

The spelling of 3888667217 in words is "three billion, eight hundred eighty-eight million, six hundred sixty-seven thousand, two hundred seventeen".