3986788305 has 16 divisors (see below), whose sum is σ = 6399379584. Its totient is φ = 2119447680.

The previous prime is 3986788291. The next prime is 3986788307. The reversal of 3986788305 is 5038876893.

It is not a de Polignac number, because 3986788305 - 2¹³ = 3986780113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3986788307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 422644 + ... + 431973.

It is an arithmetic number, because the mean of its divisors is an integer number (399961224).

Almost surely, 2^3986788305 is an apocalyptic number.

It is an amenable number.

3986788305 is a deficient number, since it is larger than the sum of its proper divisors (2412591279).

3986788305 is a wasteful number, since it uses less digits than its factorization.

3986788305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854936.

The product of its (nonzero) digits is 8709120, while the sum is 57.

The square root of 3986788305 is about 63141.0191951318. The cubic root of 3986788305 is about 1585.6514360576.

The spelling of 3986788305 in words is "three billion, nine hundred eighty-six million, seven hundred eighty-eight thousand, three hundred five".