3886444221 has 64 divisors (see below), whose sum is σ = 5950734336. Its totient is φ = 2235340800.

The previous prime is 3886444217. The next prime is 3886444229. The reversal of 3886444221 is 1224446883.

It is a happy number.

It is not a de Polignac number, because 3886444221 - 2² = 3886444217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3886444229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11009581 + ... + 11009933.

It is an arithmetic number, because the mean of its divisors is an integer number (92980224).

Almost surely, 2^3886444221 is an apocalyptic number.

It is an amenable number.

3886444221 is a deficient number, since it is larger than the sum of its proper divisors (2064290115).

3886444221 is a wasteful number, since it uses less digits than its factorization.

3886444221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602.

The product of its digits is 294912, while the sum is 42.

The square root of 3886444221 is about 62341.3524155516. The cubic root of 3886444221 is about 1572.2350711762.

The spelling of 3886444221 in words is "three billion, eight hundred eighty-six million, four hundred forty-four thousand, two hundred twenty-one".