3886905 has 16 divisors (see below), whose sum is σ = 6784704. Its totient is φ = 1884480.

The previous prime is 3886889. The next prime is 3886919. The reversal of 3886905 is 5096883.

It is not a de Polignac number, because 3886905 - 2⁴ = 3886889 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11614 + ... + 11943.

It is an arithmetic number, because the mean of its divisors is an integer number (424044).

Almost surely, 2^3886905 is an apocalyptic number.

It is an amenable number.

3886905 is a deficient number, since it is larger than the sum of its proper divisors (2897799).

3886905 is a wasteful number, since it uses less digits than its factorization.

3886905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23576.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 3886905 is about 1971.5235225581. The cubic root of 3886905 is about 157.2297203744.

Subtracting from 3886905 its product of nonzero digits (51840), we obtain a triangular number (3835065 = T₂₇₆₉).

The spelling of 3886905 in words is "three million, eight hundred eighty-six thousand, nine hundred five".