3865858 has 8 divisors (see below), whose sum is σ = 5832828. Its totient is φ = 1921584.

The previous prime is 3865853. The next prime is 3865859. The reversal of 3865858 is 8585683.

It can be written as a sum of positive squares in 2 ways, for example, as 3674889 + 190969 = 1917^2 + 437^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3865853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5241 + ... + 5932.

Almost surely, 2^3865858 is an apocalyptic number.

3865858 is a deficient number, since it is larger than the sum of its proper divisors (1966970).

3865858 is a wasteful number, since it uses less digits than its factorization.

3865858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11348.

The product of its digits is 230400, while the sum is 43.

The square root of 3865858 is about 1966.1785269909. The cubic root of 3865858 is about 156.9454149161.

The spelling of 3865858 in words is "three million, eight hundred sixty-five thousand, eight hundred fifty-eight".