3866395 has 16 divisors (see below), whose sum is σ = 5292000. Its totient is φ = 2686464.

The previous prime is 3866393. The next prime is 3866399. The reversal of 3866395 is 5936683.

3866395 = 183² + 184² + ... + 260².

It is a cyclic number.

It is not a de Polignac number, because 3866395 - 2¹ = 3866393 is a prime.

3866395 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3866393) 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, 645 + ... + 2854.

It is an arithmetic number, because the mean of its divisors is an integer number (330750).

Almost surely, 2^3866395 is an apocalyptic number.

3866395 is a deficient number, since it is larger than the sum of its proper divisors (1425605).

3866395 is a wasteful number, since it uses less digits than its factorization.

3866395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3534.

The product of its digits is 116640, while the sum is 40.

The square root of 3866395 is about 1966.3150815675. The cubic root of 3866395 is about 156.9526815898.

The spelling of 3866395 in words is "three million, eight hundred sixty-six thousand, three hundred ninety-five".